A moving neutron collides with a stationary α-particle.The fraction of the kinetic energy lost by the neutron is
Options
(a) 16/25 (b) 9/25 (c) 3/5 (d) 2/5
Correct Answer:
16/25
Explanation:
No explanation […]
If force(F),length(L) and time(T) be considered fundamental units, then the units of mass will be
Options
(a) [FLT⁻²] (b) [FL⁻²T⁻¹] (c) [FL⁻¹T²] (d) [F²LT⁻²]
Correct Answer:
[FL⁻¹T²]
Explanation:
Force = Mass x Acceleration [F] […]
Under the action of a force F=cx, the position of a body changes from 0 to x.The work done is
Options
(a) 1/2 Cx ² (b) Cx ² (c) Cx (d) 1/2 Cx
The mass of a lift is 2000kg. When the tension in the supporting cable is 28000N, then its acceleration is
Options
(a) 4ms⁻² upwards (b) 4 ms⁻² downwards (c) 14 ms⁻² upwards (d) […]
A body under the action of a force F⃗ = 6i⃗–8j⃗+10k⃗, acquires an acceleration of 1 m/s². The mass of this body must be
Options
(a) 10 kg (b) 20 kg (c) 10 […]
Probiotics are
Options
(a) cancer inducing microbes (b) new kind of food allergens (c) live microbial food supplement (d) safe antibiotics
Correct Answer:
live microbial food supplement
Explanation:
No explanation available. Be the […]
Mast cells secrete
Options
(a) myoglobin (b) histamine (c) hemoglobin (d) hippurin
Correct Answer:
histamine
Explanation:
At the site of infection, the infectious organism release some chemical to increase the flow of mast […]
Bundle sheath cells
Options
(a) Are rich in RuBisCO (b) Are rich in PEP carboxylase (c) lack RuBisCO (d) Lack both RuBisCO and PEP carboxylase
Correct Answer:
Are rich in RuBisCO
Explanation:
In C₄ […]
A drupe develops in
Options
(a) mango (b) wheat (c) pea (d) tomato
Correct Answer:
mango
Explanation:
Some fleshy fryits such as mango, plum etc. usually ave a single hard stone that […]
Nitrifying bacteria:
Options
(a) Oxidize ammonia to nitrates (b) convert free nitrogen to nitrogen compounds (c) convert proteins into ammonia (d) reduce nitrates to free nitrogen
Correct Answer:
Oxidize ammonia to nitrates
Explanation: […]
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