Which one of the following method, is commonly used method for destruction of colloid
Options
(a) dialysis (b) condensation (c) filteration by animal membrane (d) by adding electrolyte
Correct Answer:
by adding electrolyte
Which is the amount of chlorine evolved when 2 amperes of current is passed for 30 minutes in an aqueous solution of NaCl
Options
(a) 33 g (b) 1.32 g (c) 66 g […]
How many g of silver will be displaced from a solution of AgNO₃ by 4 g of magnesium
Options
(a) 18 g (b) 4 g (c) 36 g (d) 16 g
Correct Answer: […]
The limiting radius ratio for tetrahedral shape is
Options
(a) 0 to 0.153 (b) 0.225 to 0.414 (c) 0.155 to 0.225 (d) 0.414 to 0.732
Correct Answer:
0.225 to 0.414
Explanation:
No explanation […]
The fcc crystal contains how many atoms in each unit cell
Options
(a) 6 (b) 8 (c) 4 (d) 5
Correct Answer:
4
Explanation:
No explanation available. Be the first to write the […]
When cold potassium permanganate (KMnO₄) is added to ethylene gives
Options
(a) methanol (b) ethanol (c) glycerol (d) ethylene glycol
Correct Answer:
ethylene glycol
Explanation:
No explanation available. Be the first to write […]
Optical activity is measured by
Options
(a) spectrograph (b) Polarimeter (c) tracer technique (d) refractometer
Correct Answer:
Polarimeter
Explanation:
Optically active substances is one that rotates the plane of polarised light.If the rotation […]
The fractional distillation is used in
Options
(a) petroleum (b) crude oil (c) coal tar (d) all of these
Correct Answer:
all of these
Explanation:
Fractional distillation : In this process the distillate […]
If 0.2 gram of an organic compound containing carbon, hydrogen and oxygen on combustion , yielded 0.147 gram carbon dioxide and 0.12 gram water, what will be the content of oxygen in substance
Options […]
Baking soda or baking powder is
Options
(a) washing soda (b) caustic soda (c) soda ash (d) sodium bicarbonate
Correct Answer:
sodium bicarbonate
Explanation:
No explanation available. Be the first to write the […]
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