(a) Wrought iron
(b) Steel
(c) White cast iron
(d) Grey cast iron
Answer:
Heavy water is used as
(a) Drinking water
(b) Moderator
(c) Washing water
(d) Detergent
Answer:
Which of the following exhibits inert pair effect
(a) Al
(b) Tl
(c) Sc
(d) B
Answer:
Silicon exhibit diagonal relationship with
(a) B
(b) Be
(c) N
(d) C
Answer:
The name is Lavoisier is associated with the gas
(a) Nitrogen
(b) Carbon dioxide
(c) Oxygen
(d) Carbon monoxide
Answer:
anhydrous aluminium chloride gives fumes in moist air because it is
(a) Readily hydrolyses
(b) Efflorescent
(c) Hydroscopic
(d) Deliquescent
Answer:
Which of the following is not an ore of boron
(a) Borax
(b) Colemanite
(c) Kernite
(d) Feldspar
Answer:
The element that marks the paper like lead is
(a) B
(b) Ti
(c) Tl
(d) Ga
Answer:
Emery consists of impure
(a) Carborundum
(b) Graphite
(c) Iron
(d) Corundum
Answer:
The inert form of carbon is
(a) Charcoal
(b) Diamond
(c) Graphite
(d) Coal
Answer: