Everyday Science Mcqs » Everyday Science MCQs
Which is the heaviest metal?

A. Iron
B. Mercury
C. Nickel
D. Osmium

Bleaching action of chlorine is by________?

A. Oxidation
B. Reduction
C. Decomposition
D. Hydrolysis

Bleaching powder contains___________?

A. Nitrogen
B. Iodine
C. Chlorine
D. Bromine

Radon is___________?

A. Germon radio
B. Radio active gas
C. Artificial fibre
D. An explosive

Which of the following is the most toxic gas?

A. Carbon dioxide
B. Carbon monoxide
C. Nitrogen
D. Hydrogen

Air Conditioning Controls:___________?

A. Circulation of the air
B. Humidity
C. Temperature
D. All of the above

Earth rotates the sun in___________?

A. 23 hours 56 min 4 sec
B. 24 hours
C. 23 hours 57 min 9 sec
D. Non of above

Who created periodic table?

A. Faraday
B. Lavosiier
C. Arrhenius
D. Mendeleev

Bauxite is an ore of_________?

A. Copper
B. Zinc
C. Aluminium
D. Iron