Which one of the following organisms can serve as a biofertiliser for rice crop?
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Assertion (A) : Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons. Reason (R) : Ammonia can be liquified at ambient temperatures at low pressures.
Assertion (A) : Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons. Reason (R) : Ammonia can be liquified at ambient temperatures at low pressures.
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A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
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Match List I (Industrial processes) with List II (Industry with which associated) and select the correct answer using the codes given below the Lists
Match List I (Industrial processes) with List II (Industry with which associated) and select the correct answer using the codes given below the Lists
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Aluminium surfaces are often ‘anodized’. This means the deposition of a layer of
Aluminium surfaces are often ‘anodized’. This means the deposition of a layer of
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Soft drinks such as colas contain significant quantities of
Soft drinks such as colas contain significant quantities of
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Which one of the following materials is very hard and very ductile
Which one of the following materials is very hard and very ductile ?
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Most of the explosions in mines occur due to the mixing of
Most of the explosions in mines occur due to the mixing of
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The stones formed in human kidney consist mostly of
The stones formed in human kidney consist mostly of
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Assertion (A) : Small glass beads fixed on traffic signals glow brightly when light falls upon them. Reason (R) : Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected from a rarer medium.
Assertion (A) : Small glass beads fixed on traffic signals glow brightly when light falls upon them. Reason (R) : Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected from a rarer medium.