A. Red light
B. Sound waves
C. X-Rays
D. Photon
Submitted by: Mansoor Ul Haque
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
Submitted by: Mansoor Ul Haque
A. molecules are stable
B. molecules are unstable
C. nuclei are stable
D. nuclei are unstable
Submitted by: Mansoor Ul Haque
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
Submitted by: Mansoor Ul Haque
A. increase inter-molecular interactions
B. increasing potential energy of molecules
C. increasing kinetic energy of molecules
D. decreasing surface tension
Submitted by: Mansoor Ul Haque
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
Submitted by: Mansoor Ul Haque
A. hydrogen bonding
B. irregular shape of the molecules
C. irregular shape of the molecules and strong inter-molecular forces
D. greater molecular size
Submitted by: Mansoor Ul Haque
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
Submitted by: Mansoor Ul Haque
A. Precision and accuracy should go side by side in a scientific work
B. Scientific work must be precise, accuracy is not essential
C. Scientific work must be accurate, precision is not essential
D. Calculations must be made before any experiment
Submitted by: Mansoor Ul Haque
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
E. one-half its acceleration multiplied by the time interval
Submitted by: Mansoor Ul Haque
Advertisement
