Chemistry/G.K Question and Answer - Chemistry MCQs Set V Sample Test,Sample questions

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

1.Base

2. Salt

3.Concentrated Acid

4. Alkali


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

1.Proton

2.Electron

3.Neutron

4. Ion


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

1.Electron

2.Nucleus

3.Proton

4.Neutron


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

1. Ion

2.Electron

3. Proton

4.Neutron


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

1.Nucleus

2. Neutron

3.Electron

4. Proton


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

1.Alkynes

2.Haloalkanes

3.Alkenes

4.Ketones


Question:
Aromatic hydrocarbons are also known as ........... ?

1.Acetaldehyde

2.Butyne

3. Arenes

4.Arines


Question:
At present how many elements are known to us?

1.118

2.119

3.120

4.117


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

1.Radioactive isotopes

2.Isobars

3.Valence Electrons

4.Isotopes


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

1.Nucleus

2. Ion

3.Compound

4.Molecule


Question:
 Name a metal oxide which is acidic and basic in nature?

1.Calcium Oxide

2.Iron Oxide

3.Amphoteric Oxide

4.Sulphur dioxide


Question:
 Which of the following statement is not true about metals?

1.Metals are heavy and produce sound when hit with an object.

2.Mercury metal is solid at room temperature.

3.Metals have high densities.

4.Metals can be converted into thin sheets.


Question:
 Why alkanes are known as saturated hydrocarbon?

1. It consists of triple bond.

2.It consists of double bond.

3.It consists of single bond.

4.None of the above


Question:
 Why Aluminium is used for making cooking utensils?

1. It is good conductor of heat.

2.It is sonorous

3.It is malleable

4.None of the above.


Question:
Compounds that contain carbon are called:

1.Organic compound

2.Ionic compound

3.Alkynes

4.Molecular compound


Question:
In water alkanes are .......... ?

1.Soluble

2.Insoluble

3. Bitter in taste

4.Sweet in taste


Question:
In which hydrocarbon all the four valencies of carbon are linked together with single bond?

1. Alkanes

2.Alkenes

3.Alkynes

4.None of the above


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

1.Molecule

2.Ion

3.Element

4.Compound


Question:
Name a hydrocarbon which is a main component of natural gas?

1.Methyl

2.Methane

3.Ethyl

4.Methanol


Question:
Name a metal which is used in making airplanes?

1.Copper

2. Zinc

3. Iron

4.Aluminium


Question:
Name an open chain hydrocarbon which is odourless?

1.Aldehydes

2.Aromatic

3.Aliphatic

4.Acetate


Question:
Name an organic compound in which RCOOCOR is a functional group?

1.Ester

2.Acid anhydride

3.Dimethyl ether

4.Aliphatic hydrocarbon


Question:
Name the property of metal in which it can be drawn into thin wires?

1.Sonorous

2.Ductility

3.Malleability

4.Conductivity


Question:
Other than mercury which other metal is liquid at room temperature?

1.Sodium

2.Lithium

3.Gallium

4.Caesium


Question:
Ringing bells in the temples are made up of:

1. Non-Metals

2. Metalloids

3.Metals

4.None of the above


Question:
The atomic number of four elements P, Q, R, S are 6, 8, 10 and 12 respectively. The two elements which can react to form ionic compounds are:

1.P and S

2.Q and R

3.P and R

4.Q and S


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

1.Ionic bond

2.Ionic bond

3.Covalent bond

4.Single covalent bond


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

1.Atoms

2.Isomers

3.Homologous series

4.Haloalkanes


Question:
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:

1. Balance scale

2.Platform scale

3.Pan scale

4.Pan scale


Question:
The solution of one of the following compounds will conduct electricity. This compound is:

1.CCl4

2.HCl

3.CaCl2

4.CH3Cl


Question:
The study of heat flow is called:

1.Combustion

2.Calorimetry

3.Diffusion

4.Electrolysis


Question:
Those chemical substances which have a bitter taste are:

1. Acid

2. Bases

3.Salt

4.Concentrated Acids


Question:
Those chemical substances which have a sour taste are:

1.Salt

2. Acid

3.Bases

4.None of the above


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

1.Combination reaction

2.Displacement reaction

3.Decomposition reaction

4. Double displacement reaction


Question:
What are the different physical forms in which an element can exist called?

1. Alkane

2.Alloy

3.Amine

4.Allotropes


Question:
What is a homogeneous mixture of two or more metals called?

1.Salt

2.Alloy

3.Alkali

4.Acid


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

1.Alkanes

2.Alkenes

3.Alkynes

4. Ionic bond


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

1.Single covalent bond

2. Ionic bond

3.Double covalent bond

4.Triple covalent bond


Question:
What is the general formula of alkenes?

1.CnH2n

2.CnH2n-2

3.CnH2n+2

4.CnH2n+OH


Question:
What is the mixing of air into a liquid or solid called?

1.Aeration

2.Aldehyde

3.Actinides

4.Allotropy


Question:
What is the old name of alkenes?

1.Olefins

2.Paraffin

3.Acetylene

4.None of the above


Question:
What is the part of the solution that dissolves the solute called?

1. Solvent

2. Sol

3.Salt

4.None of the above


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

1.Electrolysis

2.Combustion

3.Diffusion

4. Calorimetry


Question:
What is the substance that has an unstable nucleus that can fall apart called?

1.Organic compound

2.Radioactive

3.Nuclear fission

4.Nuclear fusion


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

1.Effusion

2.Diffusion

3.Combustion

4.Osmosis


Question:
When a substance loses electrons, it is called:

1.Corrosion

2.Rust

3.Oxidation

4.Osmosis


Question:
Which compound is used for making perfumes and dyes?

1. Ethyl 

2.Ethyl acetate

3.Ethanoate

4.Ethanone


Question:
Which of the following metal can be cut down with the help of knife?

1.Sodium

2.Potassium

3.Gallium

4.All of the above


Question:
Which of the following statement is true about ionic compounds?

1.Ionic compounds conduct electricity when dissolved in water.

2.Ionic compounds are not soluble in water.

3. Ionic compounds are crystalline solids.

4.Only A and C


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