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The Language of Chemistry - 2

The Language of Chemistry - 2

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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is a polyatomic ion?

  1. Peroxide
  2. Stannous
  3. Phosphide
  4. Iodide
Question 2 Multiple Choice (Single Answer)

Which of the following is not an ionic compound?

  1. Sodium chloride
  2. Water
  3. Calcium phosphate
  4. Ferrous oxides
Question 3 Multiple Choice (Single Answer)

What is valency of hydroxide in calcium hydroxide molecule?

  1. � 2
  2. � 1
  3. 2
  4. 1
Question 4 Multiple Choice (Single Answer)

Which of the following is the name of NaClO2?

  1. Sodium chlorate
  2. Sodium chloride
  3. Sodium chlorite
  4. Sodium per chlorate
Question 5 Multiple Choice (Single Answer)

What is the valency of sulphur in SO2?

  1. 2
  2. 6
  3. 4
  4. 3
  5. 8
Question 6 Multiple Choice (Single Answer)

Which of the following equations is balanced?

  1. $KNO_3$ $\to$ $KNO_2$ + $O_2$
  2. $2KNO_3$ $\to$ $2KNO_2$ + O
  3. $2KNO_3$ $\to$ $KNO_2$ + $2O_2$
  4. $2KNO_3$ $\to$ $2KNO_2$ + $O_2$
Question 7 Multiple Choice (Single Answer)

Which of the following laws states that matter is neither created nor destroyed in the course of a chemical reaction?

  1. Law of conservation of matter
  2. Law of chemical reaction
  3. Law of composition of matter
  4. Law of balanced equation
Question 8 Multiple Choice (Single Answer)

What information cannot be derived from a chemical equation?

  1. Relative molecular masses of different substances
  2. Law of indestructibility of matter
  3. Concentration of reactants and products
  4. Quantity of reactants taking part and products formed
Question 9 Multiple Choice (Single Answer)

What information is conveyed by the following equation?
CaCO3 + 2HCl $\to$ CaCl2 + H2O + CO2

  1. Rate of reaction
  2. Concentration of the reactants
  3. Amount of products formed
  4. Physical states of reactants and products
Question 10 Multiple Choice (Single Answer)

Which of the following is a balanced chemical equation for the following reaction?
Sodium hydroxide + sulphuric acid $\to$ Sodium sulphate + water

  1. $Na OH_2 + H_2SO_4 \to Na_2SO_4 + 2H_2O$
  2. 2NaOH + $2H_2SO_4$ $\to$ $2Na_2SO_4$ + $2H_2O$
  3. 2NaOH + $H_2SO_4$ $\to$ $Na_2SO_4$ + $2H_2O$
  4. 2NaOH + $H_2SO_4$ $\to$ $Na_2SO_4$ + $H_2O$
Question 11 Multiple Choice (Single Answer)

Which of the following equations follows 'Law of conservation of matter'?

  1. $KNO_3$ $\to$ $KNO_2$ + $O_2$
  2. $K_2Cr_2O_7$ + 14HCl $\to$ 2KCl + $CrCl_3$ + $7H_2O$ + $3Cl_2$
  3. $2Pb\left(NO_ 3\right)_ 2 \to 2PbO + 4NO_2 + O_2$
  4. 2NaOH + $H_2SO_4$ $\to$ $Na_2SO_4$ + $2H_2O$
Question 12 Multiple Choice (Single Answer)

What is true about $CO_2$ in the reaction?
$CaCO_3$ + 2HCl $\to$ $CaCl_2$ + $H_2O$ + $CO_2$

  1. 44 litres of $CO_2$ is produced at S.T.P.
  2. 22 gram of $CO_2$ is produced at S.T.P.
  3. 22.4 litres of $CO_2$ is produced at S.T.P.
  4. 22.4 Grams of $CO_2$ is produced at S.T.P.
Question 13 Multiple Choice (Single Answer)

What is the name of the compound Ca3N2?

  1. Nitrocalcium
  2. Calciumnitride
  3. Calcium nitrate
  4. Nitrous calcium
Question 14 Multiple Choice (Single Answer)

How much 22.4 litres of NH3 will weigh at S.T.P?

  1. 44.8 gm
  2. 22.4 gm
  3. 17 gm
  4. 11 gm
  5. 14 gm
Question 15 Multiple Choice (Single Answer)

What will be the volume of 2 gm of hydrogen S.T.P?

  1. 2 litres
  2. 11.2 litres
  3. 22.4 litres
  4. 10 litres
  5. 44.8 litres
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