Everyday Science MCQs

A. Is always less than first ionization energy
B. Is always greater than first ionization energy
C. Is equal to the first ionization energy
D. May be greater or less than the first ionization energy depending on the nature of the element

A. Molecules are stable
B. Molecules are unstable
C. Nuclei are stable
D. Nuclei are unstable

A. Depends on the pressure in the discharge tube
B. Depends on the metal used as cathode
C. Depends on the gas used in the discharge tube
D. Does not depend on the nature of the gas used in the discharge tube

A. Higher melting point then molecular crystals
B. Lower melting point then molecular crystals
C. Discrete molecules linked by van der waals forces
D. Hydrogen bonding

A. Petrol molecules do not have any hydrogen bond
B. Petrol is an organic compound
C. Water molecules have small size
D. Petrol molecules have greater size

A. Increase inter-molecular interactions
B. Increasing potential energy of molecules
C. Increasing kinetic energy of molecules
D. Decreasing surface tension

A. Ice
B. Diamond
C. Sucrose
D. Plastic

A. Smallest indivisible particle in an element
B. Smallest particle of an element which can undergo a chemical reaction
C. Building block of an element
D. Always smaller than molecule

A. Sea water
B. Brass
C. Tape water
D. Graphite

A. The magnitude of its average velocity over the interval
B. The distance covered during the time interval divided by the time interval
C. One-half its speed at the end of the interval
D. Its acceleration multiplied by the time interval