Q. Liquefied petroleum gas consists of mainly -
1) Methane, butane and propane
2) Methane, ethane and hexane
3) Ethane, hexane and neon
4) None of these
Q. Which of the following is an organic compound?
(I) Methane (CH4)
(II) Ammonia (NH3)
(III) Acetic Acid (CH3COOH)
(IV) Ethane (C2H6)
1) Only II
2) Only I and IV
3) Only I and III
4) Only I, III and IV
Q. Which of the following chemicals are used in fire extinguishers?
(I) Sodium Hydrogencarbonate (Baking Soda)
(II) Sodium Hydroxide (Caustic Soda)
(III) Sulphuric Acid
(IV) Nitric Acid
The correct code is -
1) Only I and II
2) Only II and IV
3) Only I and IV
4) Only II and III
Q. The hardest natural substance known is -
1) Stainless steel
2) Graphite
3) Diamond
4) Granite
Q. Which of the following is not a covalent compound?
1) H2O
2) CO2
3) Cl2
4) Na2O
Q. Which of the following is a strong base?
1) Ammonium Hydroxide
2) Potassium Hydroxide
3) Calcium Hydroxide
4) Magnisium Hydroxide
Q. Which among the following compounds is the main constituent of natural gas?
1) Methane
2) Hexane
3) Benzene
4) Butane
Q. Compressed Natural Gas (CNG) is mainly composed of -
1) Butane
2) Propane
3) Ethane
4) Methane
Q. Photo chemical smog always contains -
1) Aluminium ion
2) Ozone
3) Methane
4) Phosphorus
Q. Which of the following is not a green house gas?
1) Carbon dioxide
2) Chlorofluorocarbon
3) Methane
4) Argon
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