Chemistry 2011 Solved Paper Previous Year Question ICSE

Chemistry 2011 Solved Paper Previous Year Question 

Chemistry 2011 Solved Paper Previous Year Question ICSE with Sample Paper for 2020 and Other Previous Year Solved Question for practice so that student of Class 10th ICSE can achieve their goals in next exam of council. Sample paper for Chemistry for 2020 exam also given . Hence by better practice and Solved Question Paper of Previous Year including 2011 is very helpful for ICSE student. By the practice of Chemistry 2011 Solved Question Paper ICSE Previous Year you can get the idea of solving. Try Also other year except Chemistry 2011 Solved Question Paper ICSE Previous Year for practice. Because only Chemistry 2011 Solved Question Paper ICSE Previous Year is not enough for preparation of council exam.

How To Solve ICSE Chemistry Paper (Previous Year)

Before start solving chemistry ICSE Paper you should read the following topics clearly.

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  1.  Read all chapter with figure.
  2. Learn all the chemical formulas used in ICSE Chemistry.
  3. Study Lab Preparation with reactant , Product and removing impurity.
  4. Practice chemical properties with reaction
  5. focus on organic chemistry, Metallurgy. Periodic Table and electrolysis.
  6. Uses of Compound.

Chemistry 2011 Solved Paper Previous Year Question

(Two Hours)

  • Answers to this Paper must be written on the paper provided separately.
  • You will not be allowed to write during the 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 I is compulsory. Attempt any four questions from Section II.
  • The intended marks for questions or parts of questions are given in brackets [ ].

ICSE Chemistry 2011  (Solved)

SECTION-I  (40 Marks)

Question 1:

(a) Choose from the following list of substances, as to what matches the description from (i) to (v) given below:
[Acetylene gas, aqua fortis, coke, brass, barium chloride, bronze, platinum].

    1. An aqueous salt solution used for testing sulphate radical.
    2. A catalyst used in the manufacture of nitric acid by Ostwald’s process.
    3. A black powdery substance used for the reduction of zinc oxide during its extraction.
    4. A gaseous hydrocarbon commonly used for welding purposes.
    5. The substance is an alloy of zinc, copper and tin.      [5]

(b) What would you observe in each of the following cases?

  1. Ammonium hydroxide is first added in a small quantity and then in excess to a solution of copper sulphate.
  2. Sugar crystals are added to a hard glass test tube containing concentrated sulphuric acid.
  3. Copper is heated with concentrated nitric acid in a hard glass test tube.
  4. Water is added to the product formed, when aluminium is burnt in a jar of nitrogen gas.
  5. When carbon monoxide is passed over heated copper oxide. [5]

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(c) Give reasons as to why:

  1. The electrolysis of acidulated water is considered to be an example of catalysis.
  2. Almost 90% of all known compounds are organic in nature.
  3. It is dangerous to burn methane in an insufficient supply of air.
  4. Hydrogen chloride can be termed as a polar covalent compound.
  5. The oxidising power of elements increases on moving from left to right
    along a period in the periodic table.     [5]

(d) Fill in the blanks from the choices given below:       [5]

  1. In covalent compounds, the bond is formed due to the ……….. (sharing /transfer) of electrons.
  2. Electrovalent compounds have a …………. (low/high) boiling point.
  3. A molecule of …………. contains a triple bond (hydrogen, ammonia, nitrogen).
  4. Across a period, the ionization potential …………… (increases, decreases, remains same).
  5. Down the group, electron affinity ……………. (increases, decreases, remains same). [5]

(e)

(i) Calculate the volume of 320 g of SO2 at stp. (Atomic mass: S = 32 and O = 16).
(ii) State Gay-Lussac’s Law of combining volumes.
(iii) Calculate the volume of oxygen required for the complete combustion of 8.8 g of propane (C3H8). (Atomic mass: C = 14, O = 16, H = 1, Molar Volume 22.4 dm3 at stp). [5]

(f) Choose the correct answer from the options given below: [10]

    1. This metal is a liquid at room temperature.
      (A) Potassium      (B) Zinc
      (C) Gold                 (D) Mercury
    2. Hydroxide of this metal is soluble in sodium hydroxide solution:
      (A) Magnesium   (B) Lead
      (C) Silver              (D) Copper
    3. In the periodic table alkali metals are plowed in the group ……..                                                 (A) 1          (B) 11                                                                                                                              (C) 17        (D) 18
    4. Hydrogen chloride gas being highly soluble in water is dried by:                                                    (A) Anhydrous calcium chloride (B) Phosphorous penta oxide                                                        (C) Quick lime                            (D) Concentrated sulphuric acid
    5. The brown ring test is used for detection of:                                                                                    (A) CO32-        (B) NO3–                                                                                                                                                             (C) SO32-        (D) Cl
    6. When dilute sulphuric acid reacts with iron sulphide, the gas evolved is ……….                           (A) Hydrogen sulphide   (B) Sulphur dioxide                                                                                     (C) Sulphur trioxide        (D) Vapour of sulphuric acid
    7. The functional group present in acetic acid is:                                                                               (A) Ketonic C = 0 (B) Hydroxyl —OH                                                                                            (C) Aldehydic —CHO (D) Carboxyl —COOH
    8. The unsaturated hydrocarbons undergo:                                                                                     (A) a substitution reaction      (B) an oxidation reaction                                                                     (C) an addition reaction           (D) none of the above
    9. The number of C-H bonds in ethane molecule are:                                                                       (A) Four         (B) Six                                                                                                                         (C) Eight        (D) Ten
    10. Which of the following properties do not match with elements of the halogen family?                  (A) They have seven electrons in their valence shell.                                                                    (B) They are highly reactive chemically.                                                                                        (C) They are metallic in nature.                                                                                                        (D) They are diatomic in their molecular form.

(g) Write the balanced chemical equation for each of the following reactions:  [5]

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