Class 10th Science Chapter-2 Practise Questions Part I

Class 10th Science Chapter-2 Practise Questions Part I
Class 10th Science Chapter-2 Practise Questions Part I

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Very Short Question/Answers – Class 10th Science Chapter-2 Practise Questions Part I

Q1. Name the Acid which is present in the Ant Sting?

Q2. What happens when Egg Shell is added to Nitric Acid (HNO3)?

Q3. Name a Salt that Does not contain water of Crystallization?

Q4. Name two constituents of baking powder?

Q5. What is the pH of gastric juices released during Digestion?

Q6. Which solution is used to dissolve gold?

Q7. How will you test gas which is liberated when HCl acid reacts with an Active Metal?

Q8. Why does the flow of acid rainwater into a river make the survival of aquatic life in the River Difficult?

Q9. When Conc. acid is added to water, whether the process is Exothermic or Endothermic?

Q10. Which by-product of the color-Alkali process is used for manufacturing bleaching Powder?

Short type Questions [2-Marks] – Class 10th Science Chapter-2 Practise Questions Part I

Q1, Why does bleaching powder smell strongly of chlorine and does not dissolve completely in Water?

Q2. Hold one moist and one dry strip of Blue litmus paper over dry HCl acid gas. Which stirp will turn red and Why?

Q3. What is the Plaster of Paris?

Q4. What is the role of toothpaste in preventing Cavities?

Q5. Explain why sour substances are Effective in Cleaning Copper Vessels?

Q6. A white Powder is added while baking bread and cakes to make them soft and fluffy. What is the name of the Powder? What are its main Ingredients?

Q7. How washing soda is prepared from baking soda?

Q8. Through the compounds such as glucose and Alcohol have hydrogen atoms in their Molecule, yet they are not categorized as Acids. Why?

Q9. What is the Reaction called when an acid reacts with a base to produce salt and water? Give Example also.

Q10. Why Pickles and curd are not stored in copper and Brass Utensils?

Short type Questions [3-Marks] – Class 10th Science Chapter-2 Practise Questions Part I

Q1. On passing excess CO2 through lime water, it turns milky and then becomes colorless. Explain why? Write chemical Equations?

Q2. How are bases different from Alkalis? Are all bases alkalis?

Q3. While Constructing a house, A builder selects marble flooring and marble top for the kitchen where vinegar and juices of lemon, tamarind, etc. are more often used for cooking. Will you agree to the selection and Why?

Q4. indicate with the help of diagram the variation of pH with a change in Concentration of H+ (aq) and OH- (aq) ions.

Q5. Write the name and formulae of three hydrated salts.

Q6. What happens when calcium carbonate is made to react when hydrochloric acid ? Give the Equation of Reaction.

Q7. Why metallic Oxides are called basic oxides and non-metallic oxides are called acidic Oxides?

Q8. What is the pH Scale? What is pH value salt formed by a:-

  1. Weak acid and a strong base?
  2. Strong acid and a strong base?

Long Type of Questions:- [5-Marks] – Class 10th Science Chapter-2 Practise Questions Part I

Q1. What is the water of Crystallisation? Write down the common name and chemical formula of the commercially important compound which has 10 water Molecules. How is this compound Obtained? Write chemical Equations also. List any two uses of this compound.

Q2. Identify the Compound X on the basis of the Reaction given below. Also, write the name and chemical formulae of A, B, and C.

X + Zn ——> A + H2 (g)

X + HCl —–> B + H2O

X + CH3COOH ——> C + H2O

Q3. An element P does not react with dilute H2SO4. If forms an oxide PO which turns Red litmus into Blue. Will you call P as a metal or a non-metal? Give Reason?

From the examination Purpose also the Practise Questions of this chapter are very important because most os the time in Boards Exam form this chapter generally practical Based Questions are asked.

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