Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

Question

Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

A. Atoms

Correct Answer :

A. Atoms

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The most important requirement for aluminium industry is the availability of cheap

A. Ore

C. Labour

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Use of water as a manometric liquid suffers from the disadvantage of its

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Aluminium is extracted from

C. Galena

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Production of a hollow product by inflation of a tube or parison is called the __________ process.

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The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their

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The main reducing agent in iron blast furnace is

C. Oxygen

D. Air

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Earing is a defect found in steels after the following metal working operation.

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Silicon in steel

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If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

A. 2³

B. 2^3/2

C. 2^5/2

D. 2^1/3

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What is the pH of distilled water?

A. 0

B. 1

C. 7

D. 14

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__________ can replace tungsten in high speed steel.

C. Cobalt

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What is the value of entropy at 273°K?

A. 0

B. 1

C. ∞

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Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.

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About __________ ton of coke is required in a cupola to produce one ton of casting.

A. 0.03

B. 0.3

C. 0.8

D. 1.5

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In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of

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Nusselt number/Biot number varies

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A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

Discuss this answer

Increasing sulphur content in pig iron tends to make it

A. Soft

B. Hard

C. Tough

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Which of the following is the most wear resistant grade of carbide used for the cutting tools?

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In inventory control theory, the economic order quantity (EOQ) is the

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Name the safety device used to protect the boiler, when the water level falls below a minimum level.

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The dimensional formula of bulk modulus of elasticity is same as that of the

C. Force

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Energy of the sun arises mainly from __________ reactions.

A. Fusion

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Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium

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Lead is poured into the joint between two __________ pipes.

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Absolute zero pressure can be attained at a temperature of

A. 0°C

B. 50°K

C. 0°R

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Fahrenheit and Centigrade scales have the same readings at

A. -55°

B. -40°

C. -33°

D. -58°

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The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability?

A. Lead

B. Copper

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Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

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For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot?

Discuss this answer

Answer 1

B. Neutrons

Answer 2

C. Nucleons

Answer 3

D. Electrons

Answer 4

B. Electrical power

Answer 5

D. Abundant water

Answer 6

A. Low vapour pressure

Answer 7

B. Corrosive nature

Answer 8

C. High vapour pressure

Answer 9

D. High boiling point

Answer 10

A. Chalcocite

Answer 11

B. Bauxite

Answer 12

D. None of these

Answer 13

A. Blow moulding

Answer 14

B. Calendaring

Answer 15

C. Extrusion

Answer 16

D. Injection

Answer 17

A. Equivalent weight

Answer 18

B. (Equivalent weight)²

Answer 19

C. Molecular weight

Answer 20

D. (Molecular weight)²

Answer 21

A. Carbon dioxide

Answer 22

B. Carbon monoxide

Answer 23

A. Extrusion

Answer 24

B. Rolling

Answer 25

C. Deep drawing

Answer 26

D. Wire drawing

Answer 27

A. Makes it usable in almost all magnetic circuits where alternating current is used

Answer 28

B. Increases its electrical resistivity and decreases the hysteresis loss

Answer 29

C. Is present upto 5% & 4% respectively when used in transformers & motor armatures

Answer 30

D. All 'a', 'b' & 'c'

Answer 31

A. Chromium

Answer 32

B. Vanadium

Answer 33

D. Molybdenum

Answer 34

D. None of these

Answer 35

A. Burning

Answer 36

B. Intensive oxidation

Answer 37

C. Evaporation

Answer 38

D. None of these

Answer 39

A. Stainless steel

Answer 40

B. Mild steel

Answer 41

C. High speed steel

Answer 42

D. High carbon steel

Answer 43

A. Inversely with thermal conductivity

Answer 44

B. Directly with heat transfer co-efficient

Answer 45

C. Directly with thermal conductivity

Answer 46

D. Inversely with the dimension of the solid

Answer 47

A. Aqueous tension

Answer 48

B. Saturated humidity

Answer 49

C. Vapor pressure

Answer 50

D. Absolute humidity

Answer 51

D. Ductile & malleable

Answer 52

A. Aluminium carbide

Answer 53

B. Tungsten carbide

Answer 54

C. Nickel carbide

Answer 55

D. Iron carbide

Answer 56

A. Lot size corresponding to break even analysis

Answer 57

B. Average level of inventory

Answer 58

C. Optimum lot size

Answer 59

D. None of these

Answer 60

A. Blow down valve

Answer 61

B. Blow off cock

Answer 62

C. Fusible plug

Answer 63

D. Safety valve

Answer 64

A. Pressure

Answer 65

B. Density

Answer 66

D. None of these

Answer 67

B. Fission

Answer 68

C. Combustion

Answer 69

D. None of these

Answer 70

A. Nitrate

Answer 71

B. Sulphate

Answer 72

C. Carbonate

Answer 73

D. Chloride

Answer 74

A. Mild steel

Answer 75

B. Concrete

Answer 76

C. Cast iron

Answer 77

D. Asbestos cement

Answer 78

D. None of these

Answer 79

C. Aluminium

Answer 80

D. Wrought iron

Answer 81

A. Malleable iron

Answer 82

B. Grey cast iron

Answer 83

C. Chilled cast iron

Answer 84

D. White cast iron

Answer 85

A. Temperature - entropy

Answer 86

B. Temperature - pressure

Answer 87

C. Enthalpy - entropy

Answer 88

D. Enthalpy-pressure

Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

Correct Answer :

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Related Questions

The most important requirement for aluminium industry is the availability of cheap

Use of water as a manometric liquid suffers from the disadvantage of its

Aluminium is extracted from

Production of a hollow product by inflation of a tube or parison is called the __________ process.

The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their

The main reducing agent in iron blast furnace is

Earing is a defect found in steels after the following metal working operation.

Silicon in steel

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

What is the pH of distilled water?

__________ can replace tungsten in high speed steel.

What is the value of entropy at 273°K?

Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.

About __________ ton of coke is required in a cupola to produce one ton of casting.

In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of

Nusselt number/Biot number varies

A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

Increasing sulphur content in pig iron tends to make it

Which of the following is the most wear resistant grade of carbide used for the cutting tools?

In inventory control theory, the economic order quantity (EOQ) is the

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

The dimensional formula of bulk modulus of elasticity is same as that of the

Energy of the sun arises mainly from __________ reactions.

Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium

Lead is poured into the joint between two __________ pipes.

Absolute zero pressure can be attained at a temperature of

Fahrenheit and Centigrade scales have the same readings at

The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability?

Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot?

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