________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?

Question: A high pressure boiler generates steam at a pressure greater than __________ kg/cm2 .
[A].

10

[B].

30

[C].

50

[D].

80

Answer: Option D

Explanation:

No answer description available for this question.

Question: A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.
[A].

lack of free

[B].

excess of

[C].

decrease in

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Internal energy of a gas obeying Vanderwall’s equation of state, , depends upon its
[A].

pressure & temperature.

[B].

pressure & specific volume.

[C].

temperature & specific volume.

[D].

temperature only.

Answer: Option A

Explanation:

No answer description available for this question.