GK Questions & Answers on Science: Chemistry Terminology (Set 5)

Questions and Answers on Science: Chemistry Terminology (Set 5) consists of 10 MCQ to learn and understand various definitions used in chemical reactions & phenomena’s which are important for various competitive examinations .....................

1. A reaction that has both oxidation and reduction, is called:

A. Redox reaction

B. Decomposition reaction

C. Synthesis reaction

D. Double displacement reaction

Ans. A

2. The solid that gets dissolved in a solution is called:

A. Solvent

B. Sol

C. Solute

D. None of the above

Ans. C

3. When a solid can change directly into gas, it is called:

A. Boiling

B. Condensation

C. Sublimation

D. Evaporation

Ans. C

4. The measurement of how much molecules on a liquid tend to stick to each other is called:

A. Suspension

B. Synthesis

C. Surface Tension

D. Transition State

Ans. C

5. The elements in group 17 of a periodic table are called:

A. Halogens

B. Zerovalent

C. Transition elements

D. Actinide series

Ans. A

6. When two substances don’t dissolve they are called:

A. Solute

B. Solvent

C. Immiscible

D. Solution

Ans. C

7. A substance that slows down chemical reaction is called:

A. Inhibitor

B. Ketone

C. Kelvin

D. Nuclear reaction

Ans. A

8. The number of moles of solute per kilogram of solvent in a solution is called:

A. Molar mass

B. Molar Volume

C. Molality

D. Molarity

Ans. C

9. When the concentration of acid is determined by neutralising it, is called:

A. Transition state

B. Theoretical yield

C. Titration

D. Thermodynamics

Ans. A

10. The outermost electrons in an atom are called:

A. Valence electrons

B. Valency

C. Neutrons

D. Protons

Ans. A

GK Questions & Answers on Science: Chemistry Terminology (Set 4)

Questions and Answers on Science: Chemistry Terminology (Set 4) consists of 10 MCQ to make your preparation simple with the help of some common definitions used in various chemical reactions which are important for various competitive examinations ............................

1. The organic compounds having the same molecular formula but different structures are called:

A. Atoms

B. Isomers

C. Homologous series

D. Haloalkanes

Ans. B

2. What is the part of the solution that dissolves the solute called?

A. Solvent

B. Sol

C. Salt

D. None of the above

Ans. A

3. Compounds that contain carbon are called:

A. Organic compound

B. Ionic compound

C. Alkynes

D. Molecular compound

Ans. A

4. What is the mixing of air into a liquid or solid called?

A. Aeration

B. Aldehyde

C. Actinides

D. Allotropy

Ans. A

5. What are the different physical forms in which an element can exist called?

A. Alkane

B. Alloy

C. Amine

D. Allotropes

Ans. D

6. The study of heat flow is called:

A. Combustion

B. Calorimetry

C. Diffusion

D. Electrolysis

Ans. B

7. What is the process called when a compound combines with oxygen gas to form water, heat and carbon dioxide?

A. Electrolysis

B. Combustion

C. Diffusion

D. Calorimetry

Ans. B

8. When a gas moves through an opening into a chamber that contains no pressure, it is called:

A. Effusion

B. Diffusion

C. Combustion

D. Osmosis

Ans. A

9. When a substance loses electrons, it is called:

A. Corrosion

B. Rust

C. Oxidation

D. Osmosis

Ans. C

10. What is the substance that has an unstable nucleus that can fall apart called?

A. Organic compound

B. Radioactive

C. Nuclear fission

D. Nuclear fusion

Ans. B

GK Questions & Answers on Science: Chemistry Terminology (Set 3)

Questions and Answers on Science: Chemistry Terminology (Set 3) consists of 10 MCQ to analyse various terms used in chemical reactions & phenomena’s which are important for various competitive examinations..........................

1. Those reactions in which two or more substances combine to form a single substance is called:

A. Combination reaction

B. Displacement reaction

C. Decomposition reaction

D. Double displacement reaction

Ans. A

2. Those chemical substances which have a sour taste are:

A. Salt

B. Acid

C. Bases

D. None of the above

Ans. B

3. Those chemical substances which have a bitter taste are:

A. Acid

B. Bases

C. Salt

D. Concentrated Acids

Ans. B

4. The scale on which the strength of acid solutions as well as basic solutions could be represented by making use of hydrogen ion concentrations in them is called:

A. Balance scale

B. Platform scale

C. Pan scale

D. pH scale

Ans. D

5. A compound formed from an acid by the replacement of the hydrogen in the acid by a metal is called:

A. Base

B. Salt

C. Concentrated Acid

D. Alkali

Ans. B

6. What is the chemical bond formed by the transfer of electrons from one atom to another is called?

A. Single covalent bond

B. Ionic bond

C. Double covalent bond

D. Triple covalent bond

Ans. B

7. The chemical bond formed by the sharing of electrons between two atoms is known as:

A. Ionic bond

B. Triple covalent bond

C. Covalent bond

D. Single covalent bond

Ans. C

8. What is a homogeneous mixture of two or more metals called?

A. Salt

B. Alloy

C. Alkali

D. Acid

Ans. B

9. What is an unsaturated hydrocarbon in which the two carbon atoms are connected by a double bond called?

A. Alkanes

B. Alkenes

C. Alkynes

D. Ionic bond

Ans. B

10. An unsaturated hydrocarbon in which two carbon atoms are connected by a triple bond is called:

A. Alkynes

B. Haloalkanes

C. Alkenes

D. Ketones

Ans. A

GK Questions & Answers on Science: Chemistry Terminology (Set 2)

Questions and Answers on Science: Chemistry Terminology (Set 2) consists of 10 MCQ to make you understand definitions used in various processes and reactions of chemistry which are important for competitive examinations .........................

1. A homogeneous mixture of two or more substances is called:

A. Solution

B. Suspension

C. Colloid

D. Metal

Ans. A

2. A kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions is called:

A. Suspension

B. Colloids

C. Solution

D. Alloy

Ans. B

3. The smallest particle of an element that can take part in a chemical reaction is called:

A. Nucleus

B. Metal

C. Atom

D. Molecule

Ans. C

4. An electrically neutral group of two or more atoms chemically bonded together is called:

A. Molecule

B. Ion

C. Element

D. Compound

Ans. A

5. A positively and negatively charged atom or group of atoms is called:

A. Nucleus

B. Ion

C. Compound

D. Molecule

Ans. B

6. A negatively charged particle found in the atoms of all elements is called:

A. Proton

B. Electron

C. Neutron

D. Ion

Ans. B

7. A positively charged particle found in the atoms of all elements is called:

A. Ion

B. Electron

C. Proton

D. Neutron

Ans. C

8. A neutral particle found in the nucleus of an atom is called:

A. Electron

B. Nucleus

C. Proton

D. Neutron

Ans. D

9. A small positively charged part at the centre of an atom is called:

A. Nucleus

B. Neutron

C. Electron

D. Proton

Ans. A

10. Atoms of the same element having the same atomic number but different mass number are called:

A. Radioactive isotopes

B. Isobars

C. Valence Electrons

D. Isotopes

Ans. D

GK Questions & Answers on Science: Chemistry Terminology (Set 1)

Questions and Answers on Science: Chemistry Terminology (Set 1) consists of 10 MCQ to make you understand various terms used in chemistry and important for various competitive examinations.................

1. The spreading out and mixing of a substance with another substance due to motion of its particles is called:

A. Diffusion

B. Vaporisation

C. Condensation

D. Heating

Ans. A

2. The process by which solid substance changes into liquid is called:

A. Boiling

B. Diffusion

C. Melting

D. Condensation

Ans. C

3. The process in which a liquid substance change into gas rapidly on heating is called:

A. Vaporisation

B. Boiling

C. Freezing

D. Condensation

Ans. B

4. What is the process called in which gas is changed into liquid by cooling?

A. Condensation

B. Vaporisation

C. Melting

D. Boiling

Ans. A

5. The changing of a solid directly into vapours on heating, and of vapours into solid on cooling is called:

A. Diffusion

B. Condensation

C. Vaporisation

D. Sublimation

Ans. D

6. A substance which cannot be split up into two or more simpler substances by the usual chemical methods of applying heat, light or electric energy is called:

A. Element

B. Atom

C. Nucleus

D. Matter

Ans. A

7. What is an element that is malleable and ductile, and conducts electricity called?

A. Non-metals

B. Metals

C. Metalloids

D. Ions

Ans. B

8. An elements that is neither malleable nor ductile, and does not conduct electricity is called:

A. Solution

B. Alloy

C. Mixture

D. Colloids

Ans. C

9. A substance made up of two or more elements chemically combined in a fixed proportion by mass is called:

A. Mixture

B. Compound

C. Solution

D. Suspension

Ans. B

10. A homogeneous mixture of two or more substances in called:

A. Solution

B. Suspension

C. Colloid

D. Metal

Ans. A