Khyber Medical University, Peshawar
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The genetic code of ________ is bound by a lipid membrane?
Explanation
Influenza (flu) virus is an enveloped virus with a lipid membrane surrounding its capsid, so 'Flu virus' is correct. Enteroviruses, hepatitis A virus and poliovirus are non-enveloped (they lack a lipid membrane).
Viruses Can NOT _______.
Explanation
Viruses cannot carry out excretion because they are obligate intracellular parasites and lack the metabolic machinery for excretory processes. They can crystallize, infect bacteria (bacteriophages) and mutate.
Where are the enzymes required for the replication of HIV virus located?
Explanation
HIV packages its replication enzymes (like reverse transcriptase and integrase) inside the capsid/core so they are 'inside the capsid'. They are not in the spikes or external to the capsid.
The process of ATP synthesis through a combination of electrochemical and osmotic events is known as:
Explanation
Oxidative phosphorylation couples an electrochemical proton gradient across a membrane to ATP synthesis by ATP synthase, so option 'Oxidative phosphorylation' is correct. Glycolysis and fermentation are different pathways and oxidation of pyruvate is a distinct step.
Optimum pH for pancreatic lipase is:
Explanation
Pancreatic lipase functions optimally in slightly alkaline conditions of the small intestine; pH around 8 is appropriate. pH values of 2–6 are too acidic for pancreatic enzymes.
Sugarcane contains ________.
Explanation
Sugarcane stores sucrose as the major sugar, so 'Sucrose' is correct. While glucose and fructose are monosaccharides, the cane's extracted sugar is primarily sucrose.
190 more questions in this paper
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Sickle cell anaemia results from?
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Which is INCORRECT about the globular proteins?
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What is the ester of fatty acids and long chain alcohol called?
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Lipids, which do not contain fatty acid are:
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The peptidoglycan cell wall is specific to.
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Where are spindle fibres attached on a chromosome during cell division
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Which organelle contribute towards steroid production?
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The lysosomes found in eukaryotes contain:
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Plasma membrane is differentially permeable membrane due to the presence of?
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The following function/activity is NOT controlled by the autonomic nervous system.
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A motor neuron:
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Diffusion _______ across the post synaptic membrane causes it to depolarise:
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A reflex action, does not involve the:
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What happens to the enzyme after an enzyme-catalysed reaction?
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Catalase can be activated at pH:
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Enzymatic activity can be inhibited by?
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A competitive inhibitor:
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Wings of birds and that of flying lizards provide evidence of:
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The embryological stages of ______ show similarity in anatomical features.
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Which enzyme is secreted in the active form?
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Which hormone stimulates the secretion of gastric juice?
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In an inflammatory response, bradykinin causes?
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Which of the following is an example of passive immunity?
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Bacteria that lack flagella are called?
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Antibiotics can be used against:
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The ______ in semen facilitate the transport of sperms.
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The acidity of urine is neutralized by?
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The corpus luteum is essentially formed from
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The outer layer of uterus is called as:
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____ is spread through sexual contact.
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The cells contained in the lacunae of the bone are called
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The ____ surrounds the muscle fibre of the skeletal muscle.
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What happens to calcium when skeletal muscles recover from contraction?
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Which of the following blood groups has anti-A and anti-B antibodies in the serum?
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What is the primary outcome of crossing over during prophase of meiosis I?
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The genetic makeup that your parents have transferred to you for your hair color, makes up your:
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Carnivorous plants have evolved mechanisms for trapping and digesting small animals. The product of this digestion is used to supplement the plant's supply of:
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Which is true for an X linked dominant trait?
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Malpighian tubules are found in:
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Shark belongs to class________
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Canal system is a characteristic of?
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Mantle is the feature of?
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The production of energy is________.
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The pathway to the breakdown of glucose, carried out by micro-organisms, is called:
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Chromosome is typically made up from a combination of?
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Which cytoplasmic organelle make their own proteins?
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The active mass movement of mitochondria in the cytoplasm is due to
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Which part of the brain is controlling your sense of balance?
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The neurotransmitter________ is hydrolysed by monoamine oxidase
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Most of the neurons in the CNS are?
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The enzymes enable the conversion of substrates into products by
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According to Lamarckism, the basis of evolution is:
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What best describes the hind leg bones seen in the whale?
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Which is true about the cells found in gastric glands lining the stomach wall?
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What directly triggers the activation of natural killer cells?
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Which of the following is NOT true about plasmids found in streptococci?
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Which of the following bacteria produces endospores?
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_______ is used in the production of Humulin?
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Which of the following does NOT relate to smooth muscles?
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Which term best describes an organism's physical characteristic.
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What will happen with the addition of salt to water?
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Which of the following is NOT true about viruses?
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How many moles are there in 60g of sodium hydroxide (NaOH)?
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Heating 24.8g of copper carbonate (CuCO3) in a crucible produced only 13.9g of copper oxide (CuO). What is the percentage yield of copper oxide?
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Efficiency of chemical reaction can be checked by calculating
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Actual yield will reach the ideal (theoretical) value if the % yield of the reaction is,
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Which of the following sub-shell does not exist?
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The splitting of spectral lines in magnetic field is
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Which element has the electronic configuration of noble-gas notation [Kr], 5s2, 4d?
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Total number of electron pairs present in the valence shell of central atom in water are
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What is the mass of 1 mole of calcium carbonate (CaCO3)?
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Which one of the following molecules has a zero-dipole moment?
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The unhybridized p orbital in sp2 hybridization is
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760 torr is equal to ____ Pascal
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How many grams of CO2 can be produced by thermally decomposing 10 moles of ZnCO3(s)?
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Molar heat of vaporization of water is
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Distillation under very reduced pressure is ____ distillation
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The example of metallic solid is
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When a crystalline substance conducts current in one direction but not through other directions of the crystal, this property is
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Forward reaction is the one that
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How many moles of NaCl are produced from 16.5g of HCl, according to the neutralization reaction? HCl(aq) + NaOH(aq) -> NaCl(aq) + H2O(l)
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In the production of SO3 from SO2 and Oxygen, the yield of SO3 is increased by
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Consider N2 + 3H2(g) ⇌ 2NH3(g) ΔH= -92.46kJ/mol The optimum temperature (°C), to produce ammonia is
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The unit of Kc for the system PCl5 ⇌ PCl3 + Cl2 is
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For a first order reaction A → B, the rate constant is 0.0458 s⁻¹. Calculate rate of the reaction if the concentration of reactant is 0.35mol dm⁻³.
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A reaction is first order with respect to A and second order with respect to B, the rate equation is
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What mass of aluminium oxide (Al2O3) is produced from 18.5g of Al metal, when it reacts completely with oxygen gas according to the following equation? 4Al(s) + 3O2(g) → 2Al2O3(s)
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Calculate the work done when 1 mole of an ideal gas expands from 15 dm³ to 20 dm³ against a constant external pressure of 2 atmospheres.
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When 1 mole of ice melts at 0°C and constant pressure of 1 atmosphere, 6025 J of heat is absorbed by the system. The molar volume of ice and water are 0.020 and 0.018 dm³, respectively. Calculate ΔE. (1dm³.atm=101.33J)
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One slice of bread with a tablespoon of peanut butter on it contains 20g carbohydrate, 10g protein, and 9g fat. Calculate total energy consumed in this intake.
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ΔH can be measured indirectly by applying
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The heat of sublimation of potassium is 98kJ/mol, the heat of dissociation of bromine gas is 192.5 kJ/mol. The ionization energy of K is 414 kJ/mol. The electron affinity of Br is -334.7 kJ/mol and the heat of formation of KBr is -405.8 kJ/mol. Calculate the lattice energy of KBr.
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Which one of the following is a strong electrolyte in solution?
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When 4 g of magnesium was heated in excess of oxygen. Calculate the theoretical yield of magnesium oxide (MgO).
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The electrode potential of the standard hydrogen electrode is chosen as
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Electronegativity of Al is approximately equal to that of
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Which of the following alkali metal forms only normal oxide with O2?
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Third period element that initially reacts rapidly with oxygen to form a protective oxide coating that prevents further reactions is
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Cu2+ salt solution is blue in colour due to transition of electrons from
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Potassium ferrocyanide is which type of salt?
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Name of ketone functional group is
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Pyridine belongs to which class of organic compounds?
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Which of the following elements cannot be detected directly in a given organic compound?
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The homolytic fission of C-H bond in an alkane result in
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Addition of HBr to isobutylene mainly gives
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Dehydrohalogenation of alkylhalide is carried out in presence of
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The pKa of n-propyl amine is
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The carbon atom carrying positive charge and attached to three other atoms or groups is called
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Which of the following has the highest boiling point?
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The reaction of an alcohol with sodium produces
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Oxidation of secondary alcohol gives
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Which aldehyde is more reactive towards nucleophilic addition?
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Acetic acid can be prepared by the hydrolysis of
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Protein present in haemoglobin has _______ structure.
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In competitive inhibition, the inhibitor
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A car is moving in a circular path at a constant speed. What provides the necessary centripetal force to keep the car moving in this path?
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Which of the following pairs correctly matches a physical quantity with its SI unit?
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____ is the natural tendency of an object to remain at rest or in motion with constant velocity?
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A car in motion hits and gets crashed into a tree trunk, what is NOT conserved?
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The vertical and horizontal component of the projectile motion are
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A ball is kicked horizontally from the top of a 10m high cliff with an initial speed of 15m/s. After 2 seconds, which of the following statement describes the ball's horizontal and vertical components?
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How does an angle between the force applied and the direction of motion influence the work done on an object?
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A nurse is pushing a wheelchair with an 80kg patient sitting on it. How much work is done by the patient's weight?
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If a constant force of 10N is applied to move an object 5m in the direction of the force, what is the work done?
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The escape velocity of a body in the gravitational field of Earth is dependent on:
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A wheel makes 3 complete revolutions. What is the total number of radians through which a point on wheel has rotated?
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For rigid body that rotates about a fixed axis, the angle swept out by a line passing through any point on the body and intersecting the axis of rotation perpendicularly is called?
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In a rotating spaceship, to produce artificial gravity, what does the centripetal force do?
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When the mass of a body moving along a circle becomes half and radius becomes double, and v is constant, the centripetal force becomes?
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What happens when two waves of the same frequency and amplitude meet in phase?
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Which type of waves can be polarized?
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For longitudinal waves
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According to the principle of superimposition, when 2 or more waves overlap at a point in space, the amplitude of the resultant wave at that point is
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The speed of sound in a medium containing ideal gas is NOT dependent on
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A police car, with its siren on, is moving towards a stationary listener. How does the stationary listener receive the frequency of the sound emitted by the siren? It
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In an adiabatic process, how does the temperature of a gas change as its volume decreases?
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During an isothermal expansion of an ideal gas, which of the following statement is true?
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Consider an ideal gas confined to the cylinder with a fixed piston, on heating the gas, all the heat supplied increases
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147. What is the increase in force between two charges if the separation between them is decreased by 50 percent?
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148. According to Coulomb's law, what happens to the electrostatic force between the 2-point charges if the distance between them is doubled?
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149. What does one Coulomb represent in terms of charge?
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150. Two points charges, +5µC and -5µC are placed at points A and B, respectively, which are separated by a distance 2d. What is the electric potential at the midpoint M of the line joining A and B?
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151. In the case of a parallel plate capacitor, when the distance between the two plates is reduced to half and the area of the plate doubled, the capacitance
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152. If the dielectric material between the plates of the capacitor is removed, what happens to the electric field between the plates?
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153. Capacitance of a capacitor increases with a decrease in:
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154. The I-V Graph for a non-Ohmic material is always
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155. Temperature coefficient of resistance is defined as increase in resistance per ohm original resistance per ___?
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156. For metals, the temperature coefficient of resistance is:
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157. If R1 and R2 are respectively the filament resistance of a 100-Watt bulb and 200-Watt bulb designed to operate on the same voltage, then power of:
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158. The maximum power transfer theorem states that maximum power is delivered to the load when
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159. Electron Volt (eV) is another unit of
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160. An electron is moving perpendicular to the magnetic field, which of the following is correct statement about electromagnetic force acting on the electron?
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161. For a positive charged particle (q) moving with a velocity (v) in a magnetic Filed of flux density B, the force (F) acting on the charge particle is given by the expression?
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162. Which of the following statement is true about the magnetic filed inside a solenoid?
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163. One-meter-long copper rod is moving with speed 20 m/sec in the magnetic field of strength 0.6 tesla what is the value of induced emf?
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164. The inductance of a coil depends on.
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The direction of induced current is determined by?
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Lenz’s law is consistent with the
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The basic principle behind the operation of the transformer is
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When the PN junction is reverse-biased, its reverse current is of the order of:
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The momentum of moving photon is:
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In every instant of time, wavelength associated with a freely falling body:
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As per 2nd photoelectric experiment, photoelectric effect does not occur if the frequency of the incident light is?
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If an electron in the hydrogen atom jumps from second to first orbit, the emitted radiation has a wavelength of?
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Black body is an ideal radiator that radiates ______ at all wavelengths
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Mass number A refers to _____
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λ is a _____ constant:
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Gamma ray camera can observe radiations from the ____ that are concentrated in the organs
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A person who sells goods and services is a ______
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The detective noticed a subtle change in the suspect's tone when he asked about her whereabouts on the night of the crime, which hinted at something more significant. What does “subtle” most likely mean?
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Despite the complicated situation, she remained _____, calmly assessing her options before deciding. Fill in the blank with the appropriate choice:
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Find out synonym for "Elated"
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Choose the sentence with the correct tense and sentence structure:
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Choose the correct sentence:
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After she ______ the stairs, her heart almost gave out from exhaustion.
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Punctuate the given sentence correctly. The teacher asked did you complete your homework
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Punctuate the following sentence correctly. Lets meet at Sarahs house after school
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Do you usually take a bus........ the market?
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I have been working ______ this project for two weeks.
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Identify the sentence that contains an ERROR in word order, style, or vocabulary:
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Identify the ERROR in the sentence: The chef quickly prepared, delicious and it served a meal.
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Order is the law of civilization as chaos is the law of the ______. The most appropriate word to be filled in is:
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Blueprint is to architect as algorithm is to ______
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Which of the following words is a synonym for "meticulous"?
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Find out the missing term in the sequence: 15, 14, 12, 9, ?
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All omnivores are herbivores. No herbivores are carnivores. Some carnivores are humans. Which of the following conclusions are TRUE? CONCLUSIONS: I. Some humans are carnivores. II. No carnivores are omnivores. III. Some omnivores are carnivores.
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Read the following statements and identify the best cause-and-effect relation: I. Sara's productivity at work has significantly decreased over the past month. II. Sara has been experiencing frequent interruptions due to ongoing construction work near her office. Which of the following best describes the cause-and-effect relationship?
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A store offers a 10% discount on all items. After applying the discount, the price of an item is Rs. 450. What was the original price of the item?
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I went 10m to the East from my house, then turned north and walked another 15m, and then I turned west and covered 12m, and then turned south and covered 15m. How far am I from my house?
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If a>b, b>c, and d>a then?
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