Q. Natural rubber is a polymer of -
1) Isoprene
2) Styrene
3) Vinyl Acetate
4) Propene
Q. Oxygen is absent in -
1) Kerosene
2) Glass
3) Soil
4) Cement
Q. The main component of greenhouse gases is -
1) carbon dioxide
2) methane
3) nitrous oxide
4) None of the above/ More than one of the above
Q. The pH value of water is -
1) 4
2) 7
3) 12
4) 18
Q. Which of the following is not a type of element?
1) Metals
2) Nonmetals
3) Gases
4) Metalloids
Q. Which of the following is also known as laughing gas?
1) Nitric oxide
2) Nitrous oxide
3) Nitrogen pentoxide
4) Nitrogen
Q. The number of electrons and neutrons in an element is 18 and 20 respectively. Its mass number is -
1) 22
2) 2
3) 38
4) 20
Q. Who is regarded as the Father of Modern Chemistry?
1) Rutherford
2) Einstein
3) Lavoisier
4) C. V. Raman
Q. Limestone, chalk and marble are different forms of -
1) Sodium hydroxide
2) Ammonium hydroxide
3) Calcium hydroxide
4) Calcium carbonate
Q. To which of the following family of elements does potassium belong?
1) Halogens
2) Alkaline earth metals
3) Noble gases
4) Alkali metals
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