During hot working of metals,

Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?

A

1 hour

B

2 hours

C

3 hours

D

4 hours

E

5 hours

During hot working of metals

A

Porosity of the metal is largely eliminated

B

Grain structure of the metal is refined

C

Mechanical properties are improved due to refinement of grains

D

All of the above

The hot working of metals is carried out

A

At the recrystallisation temperature

B

Below the recrystallisation temperature

C

Above the recrystallisation temperature

D

At any temperature

Improvement in mechanical properties of metals in its hot working is due to the grains

A

Recrystallisation

B

Refinement

C

Growth

D

Recovery

In cold working of metal as compared to its hot working

A

Cracks and blow holes are eliminated

B

Ductility and impact strength improves

C

Appreciable strain hardening is produced

D

Yield stress, hardness and fatigue strength is not at all affected

at the wholesale store you can buy an 8-pack of hot dogs for $ 1.55 a 20 pack for $ 3.05 and a 250 pack for $ 22.95 . what is the greatest number of hot dogs you can buy at this store with $ 200?

A

1108

B

2108

C

2100

D

2179

Which of the following metals does NOT react with cold or hot water?

A

Aluminium

B

Potassium

C

Sodium

D

Calcium

Which of the following metals can not be hot worked at room temperature?

A

Zinc

B

Nickel

C

Lead

D

Tin

Which of the following metals forms an amalgam with other metals?

A

Tin

B

Mercury

C

Lead

D

Zinc

Ceramic nuclear metals compared to solid nuclear metals have

A

higher melting points

B

low strength at high temperature

C

more chances of radiation damage

D

poorer corrosion resistance

During hot working of metals,

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