01.
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Ferrous Sulphate crystals are also known as ? Ans : Green Vitriol |
02.
|
Galena is the ore of ? Ans : Lead |
03.
|
In a dry cell which are act as electrodes ? Ans : Zinc and Carbon |
04.
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Iron coated with tin is called ? Ans : Tin plate |
05.
|
Malachite is the mineral of which metal ? Ans : Copper |
06.
|
Man-made elements are commonly known as ? Ans : Transuranic |
07.
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Mendeleev’s periodic table is based on ? Ans : Atomic Weight |
08.
|
Pewter is an alloy of ? Ans : Tin, Lead |
09.
|
Rat poison is ? Ans : Zinc Phosphide |
10.
|
Rutile is the ore of ? Ans : Titanium |
11.
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Sulphide ores are purified by which process ? Ans : Froth Hoatation |
12.
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The atmosphere mainly consists of ? Ans : Nitrogen |
13.
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The element which extracted from monazite sand is known as ? Ans : Thorium |
14.
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The elements which lose electrons in chemical reaction are called ? Ans : Metals |
15.
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The most plentiful mineral is known as ? Ans : Felspar |
16.
|
Water freezes at which degree Fahrenheit ? Ans : 32 |
17.
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Water gas is a mixture of carbon monoxide and ? Ans : Hydrogen |
18.
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When iron rests, its weight is ? Ans : Increases |
19.
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Which alloy is used to make the parts of aircraft ? Ans : Duralumin |
20.
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Which are chemicals that can be applied to living tissues to destroy microorganism ? Ans : Antiseptics |
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