In which of the following process, Vanadium Pentoxide is used as a catalyst?

A). Contact process

B). Haber process

C). Solvay process

D). None of these


The rate of chemical reaction does not depend on?

A). Concentration

B). Catalyst

C). Temperature

D). Pressure


Deficiency of vitamin D causes?

A). Rickets

B). Beri-Beri

C). Scurvy

D). Night blindness


Which of the following is the best source of vitamin A?

A). Apple

B). Carrot

C). Amla

D). Radish


Which of the following is not a chemical reaction?

A). Burning of paper

B). Digestion of food

C). Conversion of water into steam

D). Burning of coal


Which of the following is a chemical change?

A). Rusting of iron

B). Tempering of iron

C). Melting of iron

D). Bending of iron


Photoelectric effect was discovered by?

A). Einstein

B). Hertz

C). Bohr

D). Plank


Tetraethyl lead is used as?

A). Mosquito repellent

B). Pain killer

C). Fire extinguisher

D). Petrol additive


The hydrogenation of the vegetables oils takes place in the presence of finely divided?

A). Aluminum

B). Charcoal

C). Silica

D). Nickel


Which of the following is used in beauty parlor`s for hair setting?

A). Phosphorus

B). Sulphur

C). Chlorine

D). Silicon

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