(A) Distance
(B) Time period
(C) Light intensity
(D) Time
Q. Newton is a unit of:
(A) Mass
(B) Force
(C) Acceleration
(D) None of these
Q. Coulomb is a unit of:
(A) Electric charge
(B) Power
(C) Energy
(D) None of these
Answers:
1. (A) Distance
2. (B) Force
3. (A) Electric charge
(A) Conduction
(B) Convection
(C) Radiation
(D) Reflection
Q. The transfer of heat internal energy by microscopic collision of particles and movement of electrons within a body is called:
(A) Thermal conduction
(B) Thermal convection
(C) Thermal radiation
(D) None of these
Q. The heat transfer due to bulk movement of molecules within fluids such as gases, liquids or molten rocks is called:
(A) Conduction
(B) Radiation
(C) Reflection
(D) Convection
Answers:
1. (B) Convection
2. (A) Thermal conduction
3. (D) Convection
(A) Photoelectric effect
(B) Stark effect
(C) Thermionic effect
(D) Piezo-electric effect
Answer: (D) Piezo-electric effect
Q. The word Piezoelectricity means electricity resulting from:
(A) pressure and latent heat
(B) movement of crystals
(C) application of current
(D) None of these
Answer: (A) pressure and latent heat
Q. Chemically quartz is a specific form of compound called:
(A) Aluminum dioxide
(B) Silicon dioxide
(C) Barium oxide
(D) None of these
Answer: (B) Silicon dioxide
(A) Porous
(B) Hard
(C) Rough
(D) Brittle
Answer: (A) Porous
Q. The color of a sedimentary rock is often mostly determined by:
(A) Zinc
(B) Iron
(C) Calcium
(D) None of these
Answer: (B) Iron
Q. Thick sequences of red sedimentary rocks formed in arid climates are called:
(A) Red rocks
(B) Red sponge
(C) Red beds
(D) None of these
Answer: (C) Red beds
(A) Accelerate the neutrons
(B) Slow down the speed of the neutrons
(C) Increase the number of electrons
(D) Decrease the number of electrons
Answer: (B) Slow down the speed of the neutrons
Q. A nuclear reactor, formerly known as:
(A) atomic pile
(B) atomic ship
(C) atomic shaft
(D) None of these
Answer: (A) atomic pile
Q. A device used to initiate and control a self-sustained nuclear chain reaction is called:
(A) Nuclear reactor
(B) Nuclear generator
(C) Nuclear atom
(D) None of these
Answer: (A) Nuclear reactor