The noble metals________________?

Byadmin February 7, 2019August 20, 2021

The noble metals________________?

A. Are exemplified by Na, K and Li
B. Do not resist corrosion very strongly
C. Are the lowermost in the electro-chemical series of metals
D. None of these

Chemical Engineering Basics

In the diving apparatus, helium is used along with oxygen, because it is ____________________?

In the diving apparatus, helium is used along with oxygen, because it is ____________________?

A. Easily available
B. Not soluble in blood at high pressure
C. Lighter than nitrogen
D. Completely miscible with oxygen

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CHEMICAL ENGINEERING | Chemical Engineering Basics

Age hardening is connected with

Question: Age hardening is connected with
[A].

babbit metal
[B].
gun metal
[C].
stainless steel
[D].
duralumin

Answer: Option D

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Chemical Engineering Basics

Brinell hardness number (BHN) of a material is a number, which has

Question: Brinell hardness number (BHN) of a material is a number, which has
[A].

no dimension.
[B].
unit of length.
[C].
unity of force/area.
[D].
unit of force/length.

Answer: Option C

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Chemical Engineering Basics

A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2 . The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m2 °C.

Question: A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2 . The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m2 °C.
[A].

50
[B].
100
[C].
150
[D].
200

Answer: Option B

Explanation:

No answer description available for this question.

Read More A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2 . The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m2 °C.
Chemical Engineering Basics

_______________ is the most important element, which controls the physical properties of steel ?

_______________ is the most important element, which controls the physical properties of steel ?

A. Manganese
B. Silicon
C. Carbon
D. Vanadium

Read More _______________ is the most important element, which controls the physical properties of steel ?
CHEMICAL ENGINEERING | Chemical Engineering Basics

Which of the following will resist maxi-mum shock & vibration without cracking?

Question: Which of the following will resist maxi-mum shock & vibration without cracking?
[A].

Grey cast iron
[B].
White cast iron
[C].
Malleable iron
[D].
Graphite

Answer: Option C

Explanation:

No answer description available for this question.

Read More Which of the following will resist maxi-mum shock & vibration without cracking?

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