classification of elements, chemical bonding, periodicity in properties & physical transformation - Category wise Question and Answer Practice Test with Solutions

Question : 6

Which of the following is not a representative element?

a) K

b) Ba

c) Fe

d) N

Question : 7

If the two members of a Dobereiner triad are phosphorus and antimony, the third member of this triad is –

a) sulphur

b) iodine

c) arsenic

d) calcium

Question : 8 [MPPCS (Pre) 1997]

What form of energy is produced in the decomposition of water?

a) Heat

b) Sound

c) Light

d) Acid

Question : 9

The atomic number of an element tells you the number of ................ in a neutral atom.

a) neutrons

b) electrons

c) positrons

d) All of these

Question : 10 [NDA]

What are the types of bonds present in CuSO₄5H₂O ?

a) Electrovalent and coordinate covalent

b) Electrovalent, covalent, coordinate covalent and hydrogen bonds

c) Electrovalent and covalent

d) Covalent and coordinate covalent