Chemistry Specimen Paper 2023 Sec-A Solved for ICSE Class-10

Chemistry Specimen Paper 2023 Sec-A Solved for ICSE Class-10. Step by step solutions as council prescribe guideline of model sample question paper. During solutions of Chemistry Specimen Paper we explain with figure , graph, table, reaction, structure whenever necessary so that student can achieve their goal in next upcoming exam of council. Visit official website CISCE for detail information about ICSE Board Class-10.

Solutions of ICSE Class 10 Chemistry Specimen Paper 2023 Sec-A

Board	ICSE
Class	10th (x)
Subject	Chemistry
Topic	Specimen Paper Solved
Syllabus	Revised Syllabus
Session	2022-23
Section-A	With Que-1 MCQs and Q-2 one word
Max mark	80

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ICSE 2023 EXAMINATION SPECIMEN QUESTION PAPER

Chemistry
(SCIENCE PAPER – 2)

Maximum Marks: 80

Time allowed: Two hours
Answers to this Paper must be written on the paper provided separately.
You will not be allowed to write during first 15 minutes.
This time is to be spent in reading the question paper.
The time given at the head of this Paper is the time allowed for writing the answers.

Section A is compulsory. Attempt any four questions from Section B.
The intended marks for questions or parts of questions are given in brackets [ ].

ICSE Chemistry Specimen Paper 2023 Sec-A Solved for Class-10

(Attempt all questions from this Section.)

Question 1: Choose one correct answer to the questions from the given options:

(i) A weak electrolyte is:

(a) Alcohol
(b} Potassium hydroxide
(c) Ammonium hydroxide

(d) Glucose

Answer : (c) Ammonium hydroxide

(ii) Electron affinity is maximum in:

(a) Alkaline earth metals
(b) Halogens
(c) Inert gases
(d) Alkali metals

Answer : (b) Halogens

(iii) The main components of bronze are:

(a) Copper and tin
(b) Copper and iron
(c) Copper and lead
(d) Copper and zinc

Answer : (a) Copper and tin

(iv) A polar covalent compound is:

(a) Methane
(b) Ammonia
(c) Nitrogen
(d) Chlorine

Answer : (b) Ammonia

(v) An acid which has two replaceable hydrogen ions:

(a) Acetic acid

(b) Hydrochloric acid
(c) Phosphoric acid
(d) Carbonic acid

Answer : (d) Carbonic acid

(vi) The hydroxide which is soluble in excess of NaOH is:

(a) Ferric hydroxide
(b) Lead hydroxide

Answer : (b) Lead hydroxide

(vii) If the RMM of carbon dioxide is 44, then its vapour density is:

(a) 22
(b) 32
(c) 44
(d) 88

Answer : (a) 22

(viii) Drying agent used to dry Hydrogen chloride gas:

(a) Concentrated Sulphuric acid
(b) Calcium oxide
(c) Sulphurous acid
(d) Calcium hydroxide

Answer : (a) Concentrated Sulphuric acid

(ix) The catalyst used in the Haber’s Process is:

(a) Molybdenum
(b) Platinum
(c) Nickel
(d) Finely divided Iron

Answer : (d) Finely divided Iron

(x) An aqueous compound which turns colourless phenolphthalein to pink:

(a) Ammonium hydroxide
(b) Nitric acid
(c) Anhydrous calcium chloride
(d) Sulphuric acid

Answer : (a) Ammonium hydroxide

(xi) The gas formed when carbon reacts with concentrated sulphuric acid:

(a) Hydrogen
(b) Sulphur trioxide
(c) Sulphur dioxide
(d) Oxygen

Answer : (c) Sulphur dioxide

(xii) | The organic compound prepared when Ethanol undergoes dehydration:

(a) Methane
(b) Ethane
(c) Acetylene
(d) Ethene

Answer : (d) Ethene

(xiii) The IUPAC name of methyl acetylene is:

(a) Propyne
(b) Ethene
(c) Propane
(d) Ethyne

Answer : (a) Propyne

(xiv) The product formed at the cathode in electroplating of an article with Nickel is:

(a) Hydrogen gas
(b) Nickel ions
(c) Nickel atoms

(d) Oxygen gas

Answer : (c) Nickel atoms

(xv) An alkali metal found in period 3 and group 1 is:

(a) Magnesium
(b) Lithium
(c) Sodium

(d) Potassium

Answer : (c) Sodium

Question 2:

(i) The diagram shows an experiment set up for the laboratory preparation of a pungent smelling gas. The gas is alkaline in nature.

(a) Name the gas collected in the gas jar.
(b) Write a balanced chemical equation for the above preparation.

(d) What is the purpose of using Y?
(e) How will you find that the jar is full of gas?

Answer :

(a) Ammonia

(b) 2NH4Cl + Ca(OH)2 –> CaCl2 + 2H2O + 2NH3

(d) To get dry ammonia with lumps of quick ammonia

(e) Moist Red litmus —> Turn to Blue

(ii) Match the following Column A with Column B.

Column I	Column II
(a) Acid Salt	1. Black in colour
(b) Copper Oxide	2. Reddish brown
(c) Zine hydroxide	3. Hydrogen chloride
(d) Copper Metal	4. Sodium Hydrogen Carbonate
(e) Polar compound	5. Soluble in excess sodium hydroxide

Answer :

(a) 4. Sodium Hydrogen Carbonate

(b) 1. Black in colour

(d) 2. Reddish brown

(e) 3. Hydrogen chloride

(iii) Complete the following by choosing the correct answers from the bracket:

(a) Ammonia in the liquefied form is ……… [neutral / basic]

(b) Organic compounds are generally insoluble in ……… [Water / Organic solvents]

(d) Hydrocarbons having double bond is ………. [alkenes / alkynes]

(e) Analkaline gas gives dense white fumes of ……… [NH4OH / NH4Cl] with hydrogen chloride gas.

Answer :

(a) neutral

(b) Water

(d) alkenes

(e) NH4Cl

(iv) Identify the following:

(a) The property by which carbon bonds with itself to form a long chain.
(b) A substance that conducts electricity in molten or aqueous state.
(c) The energy required to remove an electron from the valence shell of a neutral isolated gaseous atom.
(d) The name of the process by which the Bauxite ore is concentrated.
(e) The bond formed by a shared pair of electrons with both electrons coming from the same atom.

Answer :

(a) Catenation

(b) Electrolyte

(d) Bayer’s Process

(e) Co-Ordinate Bond

(v) (a) Draw the structural formula for the following:

1. 2-pentanol
2. Ethanal
3. 1-butene

(b) Name the following organic compounds in IUPAC system: