When the radiation of light is passed through a prism, it undergoes:
A. reflection
B. interference
C. diffraction
D. refraction
__ is one of the allotropic modifications of carbon.
A. Silicon
B. Diamond
C. Iodine
D. Graphite
Atom is the smallest partial which is:
A. Indivisible
B. Divisible
C. Both
D. Non of these
Which of the following statement is correct ?
A. size of Cl atoms > Cl- ion
B. size of Na+ ion < Na atom
C. size of Na atom < Na+ ion
D. Cl- < Na+
An acid-Base Reaction is always a/an :
A. Endothermic
B. Exothermic
C. Fission
D. Fusion
A metallic atom loses its valence electron to form a/an:
A. an anion
B. a cation
C. an anion – cation
D. none of these
Chemistry is given from ……language ?
A. Latin
B. Greek
C. Arabic
D. None of these
Atoms of all the elements always contain in nucleus:
A. Proton and neutron
B. Neutron and electron
C. Proton
D. Neutron
What is the mass of one mole of Iodine?
A. 74g
B. 254g
C. 127g
D. 53g
The earth absorb radiation in Visible range but emit radiation at the same rate in the:
A. Ultra voilet
B. Gamma rays
C. Infrared
D. All of these
