Top 1000+ Solved Chemistry MCQ Questions Answer
Q. The gas that causes suffocation and death when coal or coke is burnt in a closed room is -
a. Methane
b. Ethane
c. Carbon monoxide
d. Carbon dioxide
Q. Teryleneisa condensation polymer of ethylene glycol and which acid?
a. Benzoic Acid
b. Salicylic acid
c. Phthalic acid
d. Terephthalic acid
Q. Which of the following ores does not contain iron?
a. Haematite
b. Magnetite
c. Limonite
d. Cassiterite
Q. Acids generate:
a. Acids generate hydrogen ions.
b. Bases generate hydroxide ions.
c. Both are correct
d. Both are incorrect
Q. Which one of the following is not a characteristic feature of alloys? They are –
a. Compounds
b. Mixtures
c. Solutions
d. Homogeneous systems
Q. When iron rusts, its weight –
a. decreases
b. increases
c. remains the same
d. first increases and then decreases
Q. Nylon threads are made of -
a. Polyester polymer
b. Polyamide polymer
c. Polyvinyl polymer
d. Polysaccharide
Q. The manufacturing of iron from ironore involves the process of -
a. Oxidation
b. Reduction
c. Electrolysis
d. Fractional distillation
Q. Cobalt (60) isotope is used in the treatment of which disease?
a. Heart diseases
b. cancer
c. diabetes
d. skin diseases
Q. Which one of the following is used in the preparation of antiseptic solution?
a. Potassium nitrate
b. Iodine
c. Iodine chloride
d. Potassium chloride
Q. The characteristic odour of garlic is due to -
a. a chloro compound
b. a sulphur compound
c. a fluorine compound
d. acetic acid
Q. An emulsion is a colloidal solution of -
a. Liquid in liquid
b. Solid in liquid
c. Gas in solid
d. Solid in Solid
Q. is a by product of sewage treatment and can be decomposed to produce biogas.
a. Sewage
b. Sludge
c. Sewer
d. Scum