Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.

Question: Glycerene is used as a coolant in cooling of some engines instead of water, because
[A].

its higher boiling point (290°C) increases its heat carrying capacity.

[B].

compartively less weight of coolant is required.

[C].

smaller radiator can be used.

[D].

all a, b & c.

Answer: Option D

Explanation:

No answer description available for this question.

Question: A __________ type pressure sensing element is commonly used in aneroid barometer.
[A].

capsule

[B].

bellow

[C].

spiral tube

[D].

flat diaphragm

Answer: Option A

Explanation:

No answer description available for this question.