Which of the following is a good conductor of heat and electricity?
(A) Diamond
(B) Charcoal
(C) graphite
(D) Methane
What is a substance made up of the same type of atoms called?
(A) compound
(B) Mixture
(C) Liquid
(D) elements
What is formed by mixing two or more pure substances in any ratio?
(A) Liquid
(B) solid
(C) Mixture
(D) gas
Which of the following is a bad conductor of electricity in spite of being a metal?
(A) Lead
(B) three
(C) Copper
(D) Nickel
Which of the following is a compound?
(A) Ammonia
(B) ozone
(C) Air
(D) mercury
Which of the following is a good conductor of electricity?
(A) Ethanol
(B) graphite
(C) Diamond
(D) alkene
Which of the following is suitable for alcoholic drinks?
(A) methanol
(B) Ethanol
(C) Hexenol
(D) propanol
The boiling point of chloroform is?
(A) 391K
(B) 334K
(C) 351K
(D) 111K
Which of the following is insoluble in water?
(A) ethene
(B) Glucose
(C) ethanoic acid
(D) Others
Which allotrope of carbon is used in making pencils?
(A) Coke
(B) Isoprene
(C) graphite
(D) Charcoal
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