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Online General Science Quiz Set No - 44

General Science questions have been taken from previous years question papers of different competitive examinations such SSC CGL, SSC CHSL, CDS, NDA, Bank, State PSC, Railways, MAT, CAT, etc.

431) Which of the following is the best conductor of Electricity ?
A) Ordinary water
B) Sea water
C) Boiled water
D) Distilled water

432) Which of the following is the Chemical name of the salt we use in our food?
A) Ammonium Sulphate
B) Calcium Chloride
C) Sodium Carbonate
D) Sodium Chloride

433) Which of the following is the lightest metal ?
A) Mercury
B) Silver
C) Lithium
D) Lead

434) Which of the following is the most stable element?
A) Uranium
B) Hydrogen
C) Oxygen
D) Lead

435) Which of the following is the petroleum wax ?
A) Bees wax
B) Carnauba wax
C) Paraffin wax
D) Jojoba wax

436) Which of the following is the principal ore of Mercury?
A) Bauxite
B) Cinnabar
C) Hematite
D) Galena

437) Which of the following is used as a coolant in nuclear reactors ?
A) Heavy water
B) Cadmium
C) Liquid sodium
D) Graphite

438) Which of the following is used as a material for making protective windows in space probes?
A) Steel
B) Graphite
C) Tungsten
D) Diamond

439) Which of the following is used as a moderator in nuclear reactor ?
A) Ordinary water
B) Radium
C) Thorium
D) Graphite

440) Which of the following is used as lubricant ?
A) Graphite
B) Silica
C) Diamond
D) Iron Oxide