On this page, We have updated the 40 most important Science questions answers around the world with the latest current affairs questions and answers regarding the latest Science Questions Patterns.
Q1. Which of these is an anti-viral protein?
(A) Urokinase
(B) Thymosin
(C) Insulin
(D) Interferon
S1. Ans. (D) Interferon
Q2. Pathogens contains special proteins called:
(A) antigens
(B) trypsin
(C) lipase
(D) Amylase
S2. Ans. (A) antigens
Q3. Which of these addictive drugs are also used as painkillers?
(A) Narcotics
(B) Sedatives
(C) Hallucinogens
(D) All can be used
S3. Ans. (A) Narcotics
Q4. Biomass is converted into fuel by:
(A) Fermentation
(B) Reflection
(C) Scattering
(D) Evaporation
S4. Ans. The answer is: (A) Fermentation
Q5. What is the original source of energy for biomass?
(A) Earth
(B) Moon
(C) Sun
(D) Star
S5. Ans. (C) Sun
Q6.Value of solar constant is:
(A) 1.4 kW m-2
(B) 1.0 kW m-2
(C) 4.1 kW m-2
(D) 0.1 kW m-2
S6. Ans. (A) 1.4 kW m-2
Q7. The unit of surface tension is:
(A) Newton per meter
(B) Newton per meter square
(C) 760 mm of Hg
(D) Newton square per meter
S7. Ans. (A) Newton per meter
Q8. The distillation under reduced pressure is called:
(A) Fractional distillation
(B) Vacuum distillation
(C) Steam distillation
(D) Pressure distillation
S8. Ans. (B) Vacuum distillation
Q9. Which of the following drugs is obtained from plants?
(A) Aspirin
(B) Insulin
(C) Cephalosporin
(D) Opium
S9. Ans. (D) Opium
Q10. Aspirin is categorized as:
(A) A drug from plants
(B) A drug from animals
(C) A drug from minerals
(D) A synthetic drug
S10. Ans. The answer is: (D) A synthetic drug
Q11. Antibiotics are used for the:
(A) Treatment of viral infections
(B) Treatment of bacterial infections
(C) Immunization against infections
(D) Both A & B
S11. Ans. (B) Treatment of bacterial infections
Q12. The distance covered by a freely falling body in 2 seconds, when its initial velocity was zero:
(A) 9.8 m
(B) 39.2 m
(C) 19.6 m
(D) 4.9 m
S12. Ans. (C) 19.6 m
Q13. Impulse have same unit as that of:
(A) Mass
(B) Force
(C) Linear momentum
(D) Energy
S13. Ans. (C) Linear momentum
Q14. Distance traveled by free falling object in first second is:
(A) 4.9 m
(B) 9.8 m
(C) 19.6 m
(D) 10 m
S14. The answer is: (A) 4.9 m
Q15. According to Graham’s Law of Diffusion, the rate of diffusion of H2 and O2 has the ratio
(A) 1:4
(B) 1:√4
(C) 4:1
(D) 2:32
S15. Ans. (C) 4:1
Q16. According to the Kinetic theory of gases, the molecular collisions are elastic. Such collisions cause
(A) No energy change
(B) A small energy change
(C) High energy change
(D) None of these
S16. ANs. (A) No energy change
Q17. The number of molecules of 4g H_2 are _____ number of molecules of 56g of N_2.
(A) Equal to
(B) Less than
(C) Greater than
(D) None of these
S17.Ans. (A) Equal to
Q18. If the velocity of an object is doubled then its K.E becomes:
(A) double
(B) constant
(C) four times
(D) sixteen times
S18. Ans. (C) four times
Q19. ______ is non-conservative force.
(A) Electric force
(B) Magnetic force
(C) Gravitational force
(D) Frictional force
S19. Ans. (D) Frictional force
Q20. Tidal energy is due to the gravitational pull of:
(A) Sun
(B) Moon
(C) Earth
(D) Mars
S20. Ans. (B) Moon
Q21. Organisms in the ecosystem that are responsible for the recycling of plant and animal wastes are:
(A) Producers
(B) Consumers
(C) Decomposers
(D) Competitors
S21. Ans. (C) Decomposers
Q22. Which form of Nitrogen is taken by the producers of the ecosystem?
(A) Nitrogen gas
(B) Ammonia
(C) Nitrites
(D) Nitrates
S22. Ans. (D) Nitrates
Q23. Which of the following is the abiotic component of the ecosystem?
(A) Producers
(B) Herbivores
(C) Carnivores
(D) Oxygen
S23.Ans. (D) Oxygen
Q24. Lattice energy is also called:
(A) Energy of affinity
(B) Crystal energy
(C) Ionized energy
(D) Bond energy
S24. Ans. (B) Crystal energy
Q25. Electric current can pass through graphite in one direction but not through other direction of crystal such a property is called:
(A) Isomorphism
(B) Anisotropy
(C) Allotropy
(D) polymorphism
S25. Ans. (B) Anisotropy
Q26. Iron acts as an electrical conductor due to:
(A) Free neutrons
(B) Electron cloud
(C) Free ions
(D) Free Protons
S26. Ans. (B) Electron cloud
Q27. Which of the following is the basic circuit element in DC circuit which controls current?
(A) Inductor only
(B) Capacitor only
(C) Resistor only
(D) All of these
S27. Ans. (C) Resistor only
Q28. At what frequency will an inductor of 1.0 H have a reactance of 500 Ω?
(A) 50 Hz
(B) 80 Hz
(C) 500 Hz
(D) 1000 Hz
S28. Ans. (B) 80 Hz
Q29. Direct current cannot flow through:
(A) Resistor
(B) Capacitor
(C) Voltmeter
(D) Inductor
S29. Ans. (B) Capacitor
Q30. NaF and MgO have both atomic ratio 1:1 in their crystals such property is:
(A) Allotropy
(B) Isomorphism
(C) Isotropy
(D) Polymorphism
S30. Ans. (B) Isomorphism
Q31. The nature of bond in diamond is:
(A) Ionic
(B) Metallic
(C) Covalent
(D) Molecular
S31. Ans. C) Covalent
Q32. The temperature at which two or more than two types of crystals exist in equilibrium is called:
(A) Melting Point
(B) Transition temperature
(C) Boiling point
(D) Eutectic temperature
S32. Ans. (B) Transition temperature
Q33. Body balance of water, salts, temperature and glucose is termed as:
(A) Excretion
(B) Tubular secretion
(C) Homeostasis
(D) Re-absorption
S33. Ans. (C) Homeostasis
Q34. The tube between kidney and urinary bladder is:
(A) Urethra
(B) Ureter
(C) Renal tubule
(D) Nephron
S34. Ans. (B) Ureter
Q35. Which of the following organ is responsible for filtering the blood?
(A) Kidney
(B) Liver
(C) Lungs
(D) Stomach
S35. Ans. (A) Kidney
Q36. A proton is about 1840 time heavier than an electron. When it is accelerated by a potential difference of 1 kV, its kinetic energy will be:
(A) 1840 keV
(B) 1/1840 keV
(C) 1 keV
(D) 920 keV
S36. Ans. (C) 1 keV
Q37. The electric potential of earth is taken to be zero because the earth is good:
(A) Dielectric
(B) Insulator
(C) Conductor
(D) Semiconductor
S37. Ans. (C) Conductor
Q38. A charge Q is divided into two parts q and Q-q and separated by a distance R. The force of repulsion between them will be maximum when:
(A) q= Q/4
(B) q= Q/2
(C) q= Q
(D) None of these
S38. Ans. (B) q= Q/2
Q39. If a molecule contains more than one functional groups, It is known as:
(A) isomer
(B) heterocyclic
(C) derivative
(D) polyfunctional
S39. Ans. (D) polyfunctional
Q40. When water vapors are passed over white anhydrous copper sulphate, which color is formed?
(A) White
(B) Yellow
(C) Deep blue
(D) Brown
S40. Ans. (C) Deep blue
