Which of the following is NOT a chemical change?
- (A) Digestion of food
- (B) Burning of paper
- (C) Conversion of water into steam
- (D) Burning of coal
- (C) Conversion of water into steam
Vapor pressure of water at 100°C is:
- (A) 140 mmHg
- (B) 360 mmHg
- (C) 580 mmHg
- (D) 760 mmHg
- (D) 760 mmHg
The chemical used as a fixer in photography is:
- (A) Sodium sulfate
- (B) Borax
- (C) Sodium thiosulfate
- (D) Ammonium per oxide
- (C) Sodium thiosulfate
Absolute zero is equal to:
- (A) -273°C
- (B) -373°C
- (C) 273 K
- (D) 373 k
- (A) -273°C
Which of the following substances exhibit the property of sublimation?
- (A) Wax
- (B) Camphor
- (C) Ice
- (D) Alcohol
- (B) Camphor
The simplest form of matter is:
- (A) Solid
- (B) Gas
- (C) Plasma
- (D) Liquid
- (B) Gas
Which one of the following is NOT amorphous?
- (A) Rubber
- (B) Plastic
- (C) Glass
- (D) Glucose
- (D) Glucose
Which of the following gases diffuses fastest?
- (A) Helium
- (B) Hydrogen
- (C) Chlorine
- (D) Fluorine
- (B) Hydrogen
Boiling point of alcohol is:
- (A) 68°C
- (B) 78°C
- (C) 88°C
- (D) 98°C
- (B) 78°C
The constant factor in “Boyle’s Law” is:
- (A) Mole
- (B) Volume
- (C) Pressure
- (D) Temperature
- (D) Temperature
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