Olete.in – MCQs, Mock Tests & Government Job Prep | Chemistry G.K Question and Answer

In which form the chemical compound RDX is used?

1. As an composition
2. As an reactor
3. As an explosive
4. As an nuclear weapon

✅ Correct Answer: 3

As a vegetable preservative poly______ foam is used.

1. Uthane
2. Uriathenes
3. Urathanes
4. Urethanes

✅ Correct Answer: 2

Chemistry is a branch of science which can be used for providing the services to mankind. Comment on the statement.

1. TRUE
2. FALSE
3. May Be
4. Strongly not

✅ Correct Answer: 4

Bio-chemical compounds are used as....

1. Skin Treatments
2. Food preservatives
3. Cooking Oils
4. All of the above

✅ Correct Answer: 4

Tell the composition of soap?

1. Sodium salt with fatty acids.
2. Potassium salt with fatty acids
3. Both a & b
4. Sodium and Potassium salt mixed with chemicals

✅ Correct Answer: 3

Which of the following compound is not used as an an alkali?

1. Sodium hydroxide
2. Potassium hydroxide
3. Carbon hydroxide
4. Nitrogen hydroxide

✅ Correct Answer: 4

Define toxicity?

1. A chemical reaction
2. A process used in the manufacturing of detergents
3. A harmful effect of soaps and detergents required to measure the effectiveness.
4. A process used in the manufacturing of soaps

✅ Correct Answer: 3

Which one is not the form of Biocides?

1. Salt
2. Iodine
3. Sugar
4. Bleech

✅ Correct Answer: 4

How biocides work?

1. Control the multiplication of insects
2. Kill the insects
3. Manage the original form of material
4. Control the bacteria

✅ Correct Answer: 4

What is Rodenticide?

1. A medicine to kill worms
2. A medicine to kill animals
3. A lubricant
4. A pesticide

✅ Correct Answer: 4

Most commonly used Rodenticides are _______ in nature.

1. Anti pesticides
2. Anti solvent
3. Anti Coagulant
4. Non anti coagulant

✅ Correct Answer: 3

Which acid is present in lemon?

1. marlic acid
2. citric acid
3. lactic acid
4. tartaric acid

✅ Correct Answer: 2

Natural rubber is a ________ which is having high elasticity.

1. Substance
2. Material
3. Elastomer
4. Chemical using carbon as main compound

✅ Correct Answer: 3

How will you define the process of Vulcanization?

1. Sample of butane mixed with sulphur and litharge
2. Sample of propane mixed with sulphur and litharge
3. Sample of plastic formed carbon mixed with sulphur and litharge
4. Sample of rubber mixed with sulphur and litharge

✅ Correct Answer: 4

What is NBR?

1. Normal Acrylonitrile-butadiene rubber
2. Natural Acrylonitrile-butadiene rubber
3. N Acrylonitrile-butane rubber
4. Acrylonitrile-butadiene rubber

✅ Correct Answer: 4

A synthetic rubber is having__________weight.

1. Higher resistance
2. Lower density
3. Higher molecular
4. Higher atomic

✅ Correct Answer: 3

Which of the following is not a type of elements?

1. Metals
2. Non Metals
3. Metalloids
4. Gases

✅ Correct Answer: 4

Which of the following is the heaviest metal?

1. osmium
2. mercury
3. iron
4. nickel

✅ Correct Answer: 2

Which one of the following received the Greener Reaction Conditions Award in 1996?

1. Dow Chemical
2. Exon Chemicals
3. US EPA
4. None of these

✅ Correct Answer: 1

Which of the following is used for clean oxidation?

1. Supercritical carbon dioxide
2. Supercritical hydrogen
3. Aqueous hydrogen peroxide
4. All of these

✅ Correct Answer: 3

Green solvents are derived from ______.

1. Renewable resources
2. Carbon resources
3. Non-renewable resources
4. All of these

✅ Correct Answer: 1

Eating tobacco and throwing on the road can produce______pollutant.

1. Air
2. Soil
3. Noise
4. Water

✅ Correct Answer: 2

Which of the following is not green house gas?

1. CO
2. O3
3. CH4
4. H2O Vapour

✅ Correct Answer: 1

Which of the following is not the components of photochemical smog that occurs in warm, dry and sunny climate?

1. NO2
2. O3
3. SO3
4. Unsaturated hydrocarbon

✅ Correct Answer: 3

Which of the following treatment is used for removal of biological impurities?

1. Sedimentation
2. Boiling
3. Sterilization
4. distillation

✅ Correct Answer: 3

Which of the following indicator used in determination of hardness?

1. EBT
2. Phenolphthalein
3. Methyl orange
4. Thymol blues

✅ Correct Answer: 1

Who is known as the father of Modern Chemistry?

1. Kolvey
2. Wholer
3. Leviatiae
4. Pasteur.

✅ Correct Answer: 3

The inventor of the atomic theory is:

1. Rutherford
2. Madam Curie
3. John Dalton
4. Albert Einstein

✅ Correct Answer: 3

Nucleon is the name which is employed for:

1. Electron and proton
2. proton and neutron
3. Electron and neutron
4. None of these

✅ Correct Answer: 2

The mass number of an atom is:

1. Number of nucleons in the nucleus
2. Number of protons in the nucleus
3. Number of neutrons in the nucleus
4. None of these

✅ Correct Answer: 1

Atom is electrically:

1. Positive
2. negative
3. bipositive
4. neutral

✅ Correct Answer: 4

The atomic properties depend upon:

1. Number of nucleons in the nucleus
2. Number of protons in the nucleus
3. Number of neutrons in the nucleus
4. None of these

✅ Correct Answer: 4

The number of neutrons and protons in the nucleus of 88Ra226 are:

1. 138 and 88
2. 88 and 138
3. 226 and 88
4. 88 and 226

✅ Correct Answer: 1

Who was the inventor of radioactivity?

1. Madam Curie
2. Irine Curie
3. Henery Bacqurel
4. Rutherford

✅ Correct Answer: 3

The penetrating power of which of the following invisible radiations emitting from the nucleus has its maximum value:

1. a-rays
2. f)-rays
3. y-rays
4. None of these

✅ Correct Answer: 3

Which of the following is negatively charged?

1. Alpha-rays
2. Beta-rays
3. Gama-rays
4. X-ray

✅ Correct Answer: 1

How many charges alpha-rays consist of?

1. Two unit positive charges
2. Unit negative charge
3. Unit positive charge
4. None of these

✅ Correct Answer: 1

Which of the following is not a radioactive element?

1. Astatine
2. Francium
3. Titanium
4. Zirconium

✅ Correct Answer: 4

Which of the following is the unit of radioactivity?

1. Curie
2. Becquerel
3. Rutherford
4. All of these

✅ Correct Answer: 2

The substance (element) obtained after emission of a beta-particle from 11Na22:

1. Mg
2. Mn
3. Ag
4. Pb

✅ Correct Answer: 1

The half life of a radioactive substance is 4 months then the time spent in decaying ¾th of the substance would be:

1. 3 months
2. 4 months
3. 8 months
4. 12 months

✅ Correct Answer: 3

The estimation of the age of the earth is done by:

1. Uranium dating
2. Carbon dating
3. Atomic clock
4. Bio clock

✅ Correct Answer: 1

The isotope of any atomic nucleus is in which:

1. Number of neutrons be same but number of protons be different
2. Number of protons be same but the number of neutrons be different
3. Number of protons and neutrons both are same
4. Number of protons and neutrons both are different

✅ Correct Answer: 2

The group displacement law is propounded by:

1. Sody & Fujan
2. Rutherford & Sody
3. Rutherford & Fujan
4. Rutherford & Madam Curie

✅ Correct Answer: 1

Which of the following is estimated by the radio carbon dating?

1. Age of the human being
2. Age of the fossils
3. Disease of the human body
4. Purity of the metals

✅ Correct Answer: 2

The number of isotopes in the hydrogen:

1. 2
2. 3
3. 4
4. 5

✅ Correct Answer: 2

Which of the following is not the isotope of hydrogen?

1. Protium
2. Deuterium
3. Iterium
4. Tritium

✅ Correct Answer: 3

8O16, 8O17, 8O18 are called:

1. Isotopes
2. Isotones
3. Isobars
4. Isoneutrons

✅ Correct Answer: 1

What is the radioactive isotope of hydrogen is called?

1. Deuterium
2. Rotium
3. Radium
4. Tritium

✅ Correct Answer: 4

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G.K Question and Answer - Chemistry MCQs Set I