Which of the following is NOT used as a lubricant?
- (A) Grease
- (B) Asphalt
- (C) Petroleum jelly
- (D) Graphite
- (B) Asphalt
Radium is obtained from the mineral:
- (A) Rutile
- (B) Hematite
- (C) Limestone
- (D) Pitchblende
- (D) Pitchblende
The two metals that are frequently used for making transistors are:
- (A) Silicon and Germanium
- (B) Niobium and Columbium
- (C) Silicone and Boron
- (D) Aluminum and Tungsten
- (A) Silicon and Germanium
Chemicals which kill rats and mice are:
- (A) Rodenticides
- (B) Insecticides
- (C) Pesticides
- (D) Scopolamine
- (A) Rodenticides
Optical fibers are mainly used for which of the following?
- (A) Weaving
- (B) Communication
- (C) Eye surgery
- (D) Food industry
- (B) Communication
Tetra-ethyl lead (TEL) is used as:
- (A) Pain killer
- (B) Fire extinguisher
- (C) Mosquito repellent
- (D) Petrol additive
- (D) Petrol additive
Which of the following elements is obtained from sea-weeds?
- (A) Argon
- (B) Iodine
- (C) Sulphur
- (D) Vanadium
- (B) Iodine
Which of the following metal is used in aircraft?
- (A) Titanium
- (B) Palladium
- (C) Tungsten
- (D) Chromium
- (A) Titanium
Alloys of which of the following metal is used for making automobile?
- (A) Copper
- (B) Iron
- (C) Aluminum
- (D) Mercury
- (C) Aluminum
Birth control pills contains synthetic:
- (A) Vitamins
- (B) Sugars
- (C) Hormones
- (D) Minerals
- (C) Hormones
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