Top 550+ Solved General Science MCQ Questions Answer

From 61 to 75 of 532

Q. Who among the following is known to manufacture first Cyclotron?

a. Ernest Lawrence

b. Niels Bohr

c. Rutherford

d. Max Born

  • a. Ernest Lawrence

Q. Charles Goodyear is known for which of the following?

a. Experiments on Rubber Plants

b. Vulcanization of Rubber

c. Invention of Radial Tyres

d. Invention of Artificial Rubber

  • b. Vulcanization of Rubber

Q. Which among the following gas is used in Balloons?

a. Hydrogen

b. Helium

c. Nitrogen

d. Oxygen

  • b. Helium

Q. Which among the following is the most important characteristic of Noble metals?

a. Luster

b. Non reactive nature

c. Preciousness

d. Rare availability

  • b. Non reactive nature

Q. What is the atomic number of Transuranic elements?

a. Greater than 90

b. Greater than 92

c. Greater than 91

d. Greater than 93

  • b. Greater than 92

Q. A Cyclotron is ___?

a. A charged particle

b. A particle Accelerator

c. A magnetic particle

d. A radioactive particle

  • b. A particle Accelerator

Q. Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.1% byweight. An increasing amount of Iron will result in which of the following?

a. Increase Hardening

b. Decrease Hardening

c. Increase ductility

d. Increase melting Point

  • a. Increase Hardening

Q. Cassiterite is an ore of which of the following ?

a. Iron

b. Zinc

c. Copper

d. Tin

  • d. Tin

Q. Which of the following are found in nucleus of Deuterium

a. 1 proton & 1 neutron

b. 2 protons

c. 1 proton and 1 electron

d. 2 neutrons only

  • a. 1 proton & 1 neutron

Q. Which among the following provides the centripetal force to an electron circulating aroundthe nucleus?

a. electrostatic forces of repulsion

b. electrostatic force of attraction

c. speed of the electron

d. nuclear charge

  • b. electrostatic force of attraction

Q. Which among the following of a catalyst does not change at the end of a reaction?

a. Quantity

b. Chemical Composition

c. Both Quantity and Chemical com position

d. None of the above

  • c. Both Quantity and Chemical com position

Q. Hard Water contains which of the following?

a. Aluminum

b. Chlorine

c. Calcium

d. Zinc

  • c. Calcium
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