| 1 |
Which one among the following is a strong smelling agent added to LPG cylinder to help in the detection of gas leakage?
|
Thioethanol<br>
Ethanol<br>
Methane<br>
Chloroform<br>
|
| 2 |
Which one among the following is a strong smelling agent added to LPG cylinder to help in ht detection of gas leakage?
|
Thioethanol<br>
Ethanol<br>
Methane<br>
Chloroform<br>
|
| 3 |
Which one among the following metals is used for making bolas because it does no corrode by seawater?
|
Nickel <br>
Tungsten<br>
Antimony <br>
Titanium<br>
|
| 4 |
Contact lenses are made from
|
Polyvinyl chloride<br>
Teflon<br>
Polystyrene<br>
Lucite<br>
|
| 5 |
Which one among the following element/ions is essential in small quantities for development of healthy teeth butt causes motting of the the if consumed in higher quantities?
|
Fluoride <br>
Iron<br>
Chloride <br>
Potassium<br>
|
| 6 |
Gypsum is added to clinker during cement manufacturing to?
|
A decrease the rate of setting of cement<br>
Bind the particles of calcium silicate <br>
Facilitate the formation of colloidal gel <br>
Impart strenght to cement <br>
|
| 7 |
What is the main constituent of a Pearl?
|
Calcium carbonate only<br>
Calcium sulphate only <br>
Calcium oxide and calcium sulphate <br>
Calcium carbonate and magnesium carbonate<br>
|
| 8 |
Who is credited with the discovery of nylon?
|
Frederick Banting<br>
Jonas Salk<br>
Wallace Carothers <br>
Linus Pauling <br>
|
| 9 |
Which of the following is tan air pollutant gas and is released by burning of fossil fuel?
|
Nitrogen<br>
Hydrogen<br>
Oxygen<br>
Sulphur dioxide <br>
|
| 10 |
Which of the following chemicals is used for fruit ripening?
|
Calcium carbide<br>
Sodium chloride<br>
Potassium chloride<br>
None of above<br>
|
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