In SI base units, 1 Bq is equal to __________ ?

A. 10 disintegration per second
B. 1.5 disintegration per second
C. 0.01 disintegration per second
D. 1 disintegration per second

Places where the temperature of air is below freezing point of the water, the precipitation will be in the form of __________ ?

A. Snow
B. Lightning
C. Hailstorms
D. Thunders

Places where the temperature of air is above freezing point of the water, the precipitation will be in the form of ________ ?

A. Hailstorms
B. Thunders
C. Rain
D. Lightning

Vernal equinox of northern hemisphere in March marks season of __________ ?

A. Spring
B. Summer
C. Winter
D. Autumn

Example of gas having monoatomic molecules is ___________ ?

A. Nitrogen
D. Nydrogen
C. Neon and argon
D. Oxygen and nitrogen

Which part of the body is attacked by “Gingivitis” disease?

A. Eyes
B. Nails
C. Gums
D. Nostrils

Chromatography is used to separate _________ ?

A. Solution
B. Mixtures
C. Molecules
D. Atoms

In a group, atomic radii increase due to successive increase of _________ ?

A. Electronic shells
B. Proton shells
C. Neutron shells
D. Nucleus

Distance at which attractive forces of hydrogen overcome repulsive forces is __________ ?

A. 75.2pm
B. 75.3pm
C. 75.5pm
D. 75.4pm

Quantum numbers are __________ ?

A. Arithmetical values
B. Numerical values
C. Leometric values
D. Logical values