Model Questions for Scientific Assistant (IMD) Exam (Paper-2) Physics - Set 16

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1. A material containing atoms of different elements, where these atoms are NOT chemically bonded to each other.

a. Mixture
b. Quantum mechanics
c. Antimatter
d. Dark matter

2. A form of matter that is complementary to regular matter, and consists of anti-particles.

a. Mixture
b. Quantum mechanics
c. Antimatter
d. Dark matter

3. About 90 percent of the matter of the universe is unseen and undetected apart from apparent gravitational influence on stars in galaxies.

a. Mixture
b. Quantum mechanics
c. Antimatter
d. Dark matter

4. Why are the atoms in a baby’s body about the same age as the atoms in an adult’s body? Because…

a. Inside every baby is an adult
b. Inside every adult is a baby
c. Atoms are eternal, i.e., they always existed
d. Atoms, that are present in both baby and adult, were formed about the same time by exploding stars

5. Most of the mass of an atom is in its

a. electrons
b. massons
c. atomic mass units
d. protons and neutrons

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6. The atoms in your body are mostly empty space, and so are the atoms in any wall. Why then is your body unable to pass through walls ? Because of…

a. nuclear forces
b. gravitational forces
c. electrical forces
d. atomic vibrations

7. Which of the following is a mixture?

a. water
b. carbon-dioxide
c. methane
d. air

8. When sodium and chlorine react to form salt, a certain amount of energy is given off. This energy is ___ compared to the energy it takes to separate sodium and chlorine to form salt.

a. less
b. more
c. the same
d. it is impossible to separate sodium and chlorine from salt

9. Mass of an object divided by its volume.

a. Atomic bonding
b. Density
c. Elasticity
d. Hooke’s law

10. Atoms are held together by attracting forces, resulting in formation of molecules, solids or liquids.

a. Atomic bonding
b. Density
c. Elasticity
d. Hooke’s law

Answer

1. (a) 2. (c) 3. (d) 4. (d) 5. (c) 6. (d) 7. (c) 8. (a) 9. (b) 10. (a)

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Study Kit for SSC Scientific Assistant (IMD) EXAM