01.
|
Which is the acid present in digestive juices ? Ans : Hydrochloric Acid |
02.
|
Which is the artificial element made by man ? Ans : Americium |
03.
|
Which is the best conductor of electricity ? Ans : Silver |
04.
|
Which is the bright form of carbon ?
Ans : Diamond |
05.
|
Which is the common of coal ?
Ans : Lignite |
06.
|
Which is the first element made by man ?
Ans : Neptunium |
07.
|
Which is the gas released by factories that is most harmful to human ? Ans : Carbone Monoxide |
08.
|
Which is the main constituent of LPG ?
Ans : Butane |
09.
|
Which is the metal as strong as steel but half as much in weight ?
Ans : Titanium |
10.
|
Which is the most ductile metal in the world ?
Ans : Gold |
11.
|
Which is the most elastic substance ?
Ans : Steel |
12.
|
Which is use to make match boxes ?
Ans : Red Phosphorus |
13.
|
Which is used for artificial rain ? Ans : Silver Iodide |
14.
|
Which is used for decolorizing sugar ?
Ans : Bone Charcoal |
15.
|
Which known as standard solvent ?
Ans : Water |
16.
|
Which metal is used in storage batteries ? Ans : Lead |
17.
|
Which mineral is called "Rock- cotton” ?
Ans : Asbestos |
18.
|
Which salt required for production of gun powder ?
Ans : Potassium Nitrate |
19.
|
Which substance is used for vulcanization of rubber ? Ans : Sulfur |
20.
|
Which synthetic fiber is known as artificial silk ?
Ans : Rayon |
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