Atomic Structure MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-4

Atomic Structure MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-4 Dr Viraf J Dalal Middle School Allied Publishers Solutions. Chapter-4. We Provide Step by Step Solutions of Exercise/Lesson -4  Fill in the blanks, Correct answer, Match the following, Name the following of Dr Viraf J Dalal Middle School Chemistry Allied Publishers. Visit official Website CISCE for detail information about ICSE Board Class-7.

Atomic Structure MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-4

Board	ICSE
Class	7th
Subject	Chemistry
Book Name	Dalal New Simplified
Chapter-4	Atomic Structure
Unit-1	Atomic Structure
Topic	Solution of exercise MCQs
Session	2023-24

Objective Type Questions

Atomic Structure Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-4

Question-1. Fill in the blanks with the correct words from the brackets.

1. A molecule of an element is chorine
2. A radical with one atom of sulphur and three atoms of oxygen is sulphite.
3. An element with variable valency is copper
4. The formula of aluminium sulphate is Al₂(S0₄)₃
   
5. the element lithium in the modern periodic table with valency 1⁺ belongs to the group 1 A(Alkali Metals)

Question-2. Select the correct answer from A, B, C, D and E for each statement given below:

A: Molecule     B: Orbits       C: Atom        D: Valency       E: Radical

Question: 1. The basic unit of matter not capable of independent existence.

Answer: C: Atom

Question: 2. The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance

Answer: A: Molecule

Question: 3. An elementary particle of matter – of a group of atoms of different elements behaving as a single unit with charge on the group.

Answer: E: Radical

Question: 4. Imaginary path around the nucleus of an atom in which electrons revolve.

Answer: B: Orbit

Question: 5. The term for the combining capacity of an element or the number of hydrogen atoms with which it combines or replaces.

Answer: D: Valency

Question-3. Match the radicals in List I with their correct names from List II.

List I	List II
1. NO21-	(A) Nitrate
2. HSO41-	(B) Bisulphate
3. SO42-	(C) Sulphate
4. PO43-	(D) Phosphate
5. HCO31-	(E) Bicarbonate

Question-4. State the correct formula of the following from the list given:

List I	List II
1. Calcium hydroxide	(A) Ca2OH / Ca(OH)2 / CaOH
2. Sodium bisulphite	(B) NaHSO4 / Na2HSO3 / NaHSO3
3. Ammonium sulphate	(C) (NH4)2S04 / NH4S03 / (NH4)2S03
4. Aluminium phosphate	(D) Al2(PO4)3 / AlPO4 / Al2(PO4)2
5. Copper [II] nitrate	(E) Cu(NO3)2 / Cu2NO3 / CuNO3

Question-5. Name the following:

Question: 1. A molecule of a compound containing two oxygen atoms and one nitrogen atom.

Answer: Nitrogen dioxide

Question: 2. The radical containing one nitrogen and four hydrogen atoms.

Answer: Ammonium

Question: 3. The compound formed when iron [Fe²⁺] combines with oxygen [O²-].

Answer: Iron (III) oxide.

Question: The group of the Modern Periodic Table to which calcium [Ca²⁺] belongs.

Answer: Group 2 or II A (Alkali earth Metals)

Question: A non-metal which forms a polyatomic molecule with more than three atoms.

Answer: Phosphorus (P₄)

.– : End of Atomic Structure Class-7 Dalal Simplified Solutions :–

Return to –  Dalal Simplified Chemistry for ICSE Class-7 Solutions

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