Q1.The chemical name of quartz is
(a)Sodium silicate
(b)Sodium phosphate
(c)Calcium phosphate
(d)Calcium oxide
Q2.Which among the following is in liquid state at normal room temperature?
(a)Sodium
(b)Mercury
(c)Copper
(d)Phosphorous
Q3.What is the first element of the periodic table?
(a)Sodium
(b)Helium
(c)Neon
(d)Hydrogen
Q4.The chemical name of laughing gas is
(a)Nitrous oxide
(b)Nitric oxide
(c)Nitrogen dioxide
(d)Nitrogen peroxide
Q5.Which one of the following is also called stranger gas?
(a) Argon
(b) Neon
(c) Xenon
(d) Nitrous oxide
Q6.The alum used for purifying water is-
(a) Potash alum
(b) Ammonium alum
(c) Chrome alum
(d) Ferric alum
Q7.Who is regarded as the father of modern chemistry?
(a)Rutherford
(b)Einstein
(c)Lavoisier
(d)C.V. Raman
Q8.What among following is used to produce artificial rain?
(a)copper oxide
(b)carbon monoxide
(c)silver iodide
(d)silver nitrate
Q9.The form of carbon used in decolourising sugar solution is
(a) wood charcoal
(b) animal charcoal
(c) coconut charcoal
(d) lamp black
Q10.Methylated spirit is a mixture of
(a) methyl alcohol and acetic acid
(b) methyl alcohol and ethyl alcohol
(c) ethyl alcohol and pyridine
(d) methyl alcohol and pyridine
Q11.During fermentation, the by- product is
(a) ethyl alcohol
(b) methyl alcohol
(c) Carbon monoxide
(d) carbon dioxide
Q12.A hydrogen bomb is based on the principle of:
(a) Natural radioactivity
(b) Nuclear fission
(c) Nuclear fusion
(d) Artificial radioactivity
Q13.Which one among the following agents is added to domestic LPG cylinder to help in the detection of gas leakage?
(a) Chloroform
(b) Ethanethiol
(c) Methanol
(d) Ethanol
Q14.Carbogen is a mixture of:
(a)CO2 and O2
(b)CO2 and N2
(c)O2 and N2
(d)None of these
Q15.Which of the following carbon compounds is used as a fire-extinguisher?
(a) Carbon disulphide
(b) carbon tetrachloride
(c) chloroform
(d) Methylene chloride
