Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about___________________?

Question: Calorific value of __________ are almost same.
[A].

lignite & anthracite coal

[B].

lignite & coal gas

[C].

petrol & diesel

[D].

coal gas & natural gas

Answer: Option C

Explanation:

No answer description available for this question.

Question: Device used as a standard for the calibration of pressure gauges is a
[A].

bellow

[B].

diaphragm

[C].

dead weight pressure tester

[D].

mercury manometer

Answer: Option C

Explanation:

No answer description available for this question.

Question: In a neutral solution
[A].

H+ ions are absent.

[B].

OH- ions are absent.

[C].

both H+ and OH- ions are present in very small but equal concentration.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.