Q. The compound which contains both ionic and covalent bonds is -
1) CH4
2) H2
3) NaCl
4) KCN
Q. Number of different oxides formed by nitrogen is -
1) four
2) two
3) four
4) three
Q. The element which form amphoteric oxides is -
1) antimony
2) bismuth
3) sodium
4) phosphorous
Q. The single acid which dissolves gold is -
1) Nitric acid
2) Hydrochloric acid
3) Selenic acid
4) Aqua regia
Q. Rectified spirit is a -
1) mixture of 95%, ethanol + 5% methanol
2) mixture of 95% ethanol + 5% H2O
3) mixture of 95% ethanol + 5% pyridine
4) 100% ethanol
Q. One of these substance contains no oxygen. which one?
1) cryolite
2) bauxite
3) dolomite
4) epsom salt
Q. Electrostatic precipitator is used to control
1) Chemical Pollutants
2) Radio-active Pollutants
3) Water Pollutants
4) Air Pollutants
Q. Alcoholic (-OH) group can be identified by:
1) Tollen's Readent Test
2) FeCl3 Test
3) Ozonolysis Reaction
4) Esterification Test
Q. Which gas is used for converting vegetable oils into saturated fats?
1) H2
2) O2
3) Cl2
4) SO2
Q. Which one of the following is used in the preparation of antiseptic solution?
1) Iodine
2) Iodine Chloride
3) Potassium Chloride
4) Potassium nitrate
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