1441. Stainless steel is an alloy of :

A. Iron,carbon and Nickel
B. Iron and manganese
C. Iron,chromium and Zinc
D. Iron, Chromium and Nickel *

1442. Which of the following is the chemical name of the salt we use in our kitchen ?

A. Sodium Chloride *
B. Ammonia
C. Sodium Carbonate
D. Calcium Chloride

1443. Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission ?

A. Uranium
B. Plutonium
C. Boron *
D. Heavy water

1444. Glycol is added to aviation gasoline because it :

A. Prevents freezing of petrol *
B. Reduces consumption of petrol
C. Reduces evaporation of petrol
D. Increase efficiency of petrol

1445. Which of the following solution is used in photography?

A. Sodium thiosulfate *
B. Sodium Silver
C. Silver Bromide
D. Silver Salt

1446. Which gas is filled in refrigerators?

A. Acetylene
B. Methane
C. Chorofluorocarbon *
D. Mafron

1447. Which of the following is the conductor of electricity ?

A. Saline water *
B. Warm water
C. Cold water
D. Distilled water

1448. Which one of the following is used as a moderator in a nuclear reactor ?

A. Radium
B. Ordinary water
C. Thorium
D. Heavy water *

1449. Which of the following is used as laughing gas ?

A. Nitrogen trioxide
B. Nitrogen oxide
C. Nitrous oxide *
D. None of these

1450. Which of the following chemical is used for fruit ripening ?

A. Calcium Carbide *
B. Sodium Chloride
C. Potassium Chloride
D. None of the above