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Physical and Chemical Principles > General Chemistry (Part 5) > Flashcards

General Chemistry (Part 5) Flashcards

1
Q

Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?

Helium | Nitrogen | Oxygen | Hydrogen

A

hydrogen

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2
Q

Which one of the following metals does not react with water to produce hydrogen?

Potassium | Cadmium | Sodium | Lithium

A

cadmium

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3
Q

Ozone consists of

A

oxygen only

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4
Q

One of the constituents of tear gas is:

A

chloropicrin

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5
Q

An atomic dock is based on transitions in:

A

cesium

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6
Q

Silver halides are used in photographic plates because they are:

A

Reduced by light.

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7
Q

Tetra ethyl lead (TEL) is:

A

An antiknock compound.

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8
Q

The isotope used for the production of atomic energy is:

A

U-235

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9
Q

Which of the following is not a nucleon?

A

positron

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10
Q

The material used in the manufacture of lead pencil is:

A

graphite

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11
Q

If all bullets could not be removed from gunshot injury of a man it may cause poisoning by

A

lead

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12
Q

German silver an alloy does not contain the metal:

Nickel | Zinc | Copper | Silver

A

silver

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13
Q

Oxygen which is vital for life is a product of photosynthesis and comes from

A

water

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14
Q

The noble gas used in radiotherapy is:

A

radon

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15
Q

Steel contains:

A

12% carbon

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16
Q

The chemical(s) most commonly used for cloud seeding or artificial rainmaking is/are:

Silver Iodide | Sodium Chloride | Dry ice or frozen carbon dioxide | All of these

A

silver iodide

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17
Q

The substance that is added to make natural rubber strong and bouncier is:

A

sulfur

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18
Q

White phosphorus is always kept under:

A

benzene

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19
Q

Galena is a mineral of:

A

lead

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20
Q

Magnesium is an alloy of:

A

aluminum and magnesium

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21
Q

Galvanization of iron is carried out using:

A

zinc

22
Q

Cooking gas is a mixture of:

A

butane and propane

23
Q

Dry powder fire extinguishers contain:

A

sand and sodium bicarbonate

24
Q

Which type of glass is used for making glass reinforced plastic?

A

fiber glass

25
Q

Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are:

A

boron and cadmium

26
Q

The most commonly used chemicals in the artificial rainmaking or cloud seeding are:

AgI | NaCl | Frozen CO2 | All of these

A

AgI

27
Q

Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission?

Boron | Heavy water | Uranium | Plutonium

A

boron

28
Q

Hydrogen bomb is based on the principle of:

A

uncontrolled fusion reaction

29
Q

Supersonic Jet causes pollution by thinning of:

A

O2 layer

30
Q

Which type of glass is used for making glass reinforced plastic?

A

fiber glass

31
Q

Which of the following metals causes Itai-Itai disease?

A

cadmium

32
Q

Glycol is added to aviation gasoline because it:

A

prevents freezing of petrol

33
Q

Which one of the following minerals is found in Monazite sand?

A

thorium

34
Q

Nowadays yellow lamps are frequently used as streetlights. Which of the following gases is used in these lamps?

A

sodium

35
Q

Which of the following could be used as fuel in propellant or rockets?

A

liquid hydrogen + liquid oxygen

36
Q

The addition of gypsum to Portland cement helps in:

A

preventing rapid setting of cement

37
Q

The constituents of automobile exhaust that can cause cancer is/are:

A

lead

38
Q

Hard steel contains:

A

0.5 to 5 percent carbon

39
Q

Cement is formed by strongly heating a mixture of:

A

limestone and clay

40
Q

Glass is a:

A

supercooled liquid

41
Q

The temperature of oxyacetylene flame is around:

A

3200°C

42
Q

The refrigerant FREON is:

A

difluoro dichloride methane

43
Q

Glass is a:

A

supercooled liquid

44
Q

Stainless steel is an alloy of:

A

chromium carbon and iron carbon

45
Q

For generation of biogas the materials commonly used are:

A

animal wastes

46
Q

Raw materials used for the manufacture of glass are:

A

sand, soda, limestone

47
Q

Which of the following is used in welding broken pieces of iron rails and machine parts?

A

aluminum powder

48
Q

The BOD values of water indicate the:

A

Amount of oxygen used for biochemical oxidation.

49
Q

Which of the following in automobile exhaust can cause cancer?

Oxides of nitrogen | Carbon monoxide | Lead | polyclinic hydrocarbons

A

lead

50
Q

Bleaching powder is used in drinking water as a/an:

A

disinfectant

Physical and Chemical Principles (6 decks)

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