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Basic Concepts Of Chemistry

Description: Basic Concept Of Chemistry Chemistry Odd One OutOdd one outOdd One Out
Number of Questions: 35
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Which of the following consists of atoms of same type?

  1. Molecule

  2. Compound

  3. Element

  4. Mixture


Correct Option: C

Which of the following is not a sub atomic particle?

  1. Proton

  2. Neutron

  3. Electron

  4. Molecule


Correct Option: D

Under which of the following categories would you classify air?

  1. Element

  2. Molecule

  3. Compound

  4. Mixture


Correct Option: D

Components of which of the following can be separated most easily?

  1. Atom

  2. Molecule

  3. Compound

  4. Mixture


Correct Option: D

Which of the following is a binary compound?

  1. CaCO3

  2. NaOH

  3. HCl

  4. KMnO4


Correct Option: C

Mass number is the sum of ________ and ________ present in an atom.

  1. protons and electrons

  2. electrons and neutrons

  3. protons and neutrons

  4. electrons and positron


Correct Option: C

Which of the following branches of chemistry, studies the living matter?

  1. Analytical

  2. Electro chemistry

  3. Organic

  4. Inorganic


Correct Option: C

In nitrogen atom, seven electrons are present. What is the atomic number of nitrogen?

  1. 7

  2. 14

  3. 8

  4. 16


Correct Option: A

Which of the following is not an element?

  1. Carbon

  2. Oxygen

  3. Sodium Chloride

  4. Potassium


Correct Option: C

Under which of the following categories, would you classify metalloids?

  1. Element

  2. Compound

  3. Molecule

  4. Mixture


Correct Option: A

Which of the following particles contribute to the mass of an atom?

  1. Electrons and neutrons

  2. Neutrons

  3. Protons and neutrons

  4. Protons


Correct Option: C

Number of atoms present in the molecule of an element is known as ________ of an element.

  1. valency

  2. atomic number

  3. atomicity

  4. mass number


Correct Option: C

Which of the following is a substance made up of two or more elements combined chemically ?

  1. Molecule

  2. Mixture

  3. Compound

  4. Chemical


Correct Option: C

Which of the following is not studied under physical chemistry?

  1. Energy changes in a reaction

  2. Reaction rate

  3. Effect of electricity on chemical reaction

  4. Percentage composition of each element in a compound


Correct Option: D

You have been given a substance to find out the elements and compounds present in the substance. With which branch of chemistry will you deal?

  1. Organic

  2. Inorganic

  3. Analytical

  4. Physical


Correct Option: C

Which of the following statements is not true with regard to matter?

  1. Atom is electrically neutral.

  2. Atoms cannot exist independently.

  3. Atom can be divided into smaller particles.

  4. Atoms combine to form molecules.


Correct Option: B

Which of the following particles contribute to the charge of an atom?

  1. Electrons

  2. Protons

  3. Electrons and neutrons

  4. Electrons and protons


Correct Option: D

Atomic number of an element is 11 and mass number of that element is 23. How many neutrons are present in that atom?

  1. 11

  2. 12

  3. 22

  4. 23


Correct Option: B

Which of the following statements is true regarding the sub atomic particles of matter?

  1. In an atom, number of protons is always equal to the number of electrons.

  2. In an atom, numbers of protons is always equal to the number of neutrons.

  3. In an atom, number of protons is always more than the number of neutrons.

  4. In an atom, number of neutrons is always more than the number of electrons.


Correct Option: A

Atoms of which of the following elements exist independently?

  1. Hydrogen

  2. Nitrogen

  3. Helium

  4. Oxygen


Correct Option: C

Which of the following statements is not always true with regard to molecule?

  1. It is neutral.

  2. It consists of atoms of similar type.

  3. It exists independently.

  4. It can take part in a chemical reaction.


Correct Option: B

Which of the following elements has the maximum atomicity?

  1. Phosphorus

  2. Sulphur

  3. Hydrogen

  4. Ozone


Correct Option: B

Under which of the following categories, would you classify germanium?

  1. Metal

  2. Non metal

  3. Metalloid

  4. Mixture


Correct Option: C

Which of the following substances is a compound?

  1. Charcoal

  2. Potassium permanganate

  3. Vinegar

  4. Syrup


Correct Option: B

The components of which of the following substances can be separated most easily?

  1. Water

  2. Salt

  3. Ink

  4. Sugar


Correct Option: C

The chemical composition of which of the following substances is fixed?

  1. Tea

  2. Milk

  3. Jam

  4. Glucose


Correct Option: D

Which of the following is a molecule of an element?

  1. Water

  2. Ozone

  3. Salt

  4. Sugar


Correct Option: B

Radius of hydrogen atom is of the order of _____ .

  1. 1 nm

  2. 1 A�

  3. 1 cm

  4. 0.1 A�


Correct Option: B

Which of the following pairs forms an electrically neutral atom?

  1. Proton and neutron

  2. Proton and electron

  3. Neutron and electron

  4. Nucleus and electron


Correct Option: B

Atomic number is always _______ as that of atomic mass.

  1. same

  2. lesser than or equal

  3. greater

  4. lesser


Correct Option: B

Atomic number of Cl is 17. How many protons are present in it?

  1. 34

  2. 7

  3. 17

  4. 0


Correct Option: C

HCl has atomic weight equal to

  1. 35

  2. 37

  3. 18

  4. 17


Correct Option: A

Mass of the electron is

  1. 9.1 × 10-28 g

  2. 9.1 × 10-26 g

  3. 9.1 × 10-24 g

  4. 1.9 × 10-28 g


Correct Option: C

Which of the following elements exists as diatomic molecule?

  1. Chlorine

  2. Phosphorus

  3. Sulphur

  4. Helium


Correct Option: A

Which of the following particles are present inside the nucleus of an atom? (i) Protons
(ii) Neutrons
(iii) Electrons

  1. (i) and (ii)

  2. (ii) only

  3. (ii) and (iii)

  4. (i) only


Correct Option: A
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