10th Standard Science Chapter 2 November 26, 2020December 19, 2020wefru 10th Standard Science Chapter 2 Quiz. how much you know or you don’t know, test here. quiz contains only 10 questions there no time limit. 0 Created on November 26, 2020 By wefru 10th Standard Science Chapter 2 TEST YOUR SKILLS 1 / 10 Q1) Which of the following are exothermic processes? (i) Reaction of water with quick lime(ii) Dilution of an acid(iii) Evaporation of water(iv) Sublimation of camphor (crystals) (a) (i) and (ii) (b) (ii) and (iii) (c) (i) and (iv) (d) (iii) and (iv) Answer 2 / 10 Question 2.An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change? (a) Baking powder (b) Lime (c) Ammonium hydroxide solution (d) Hydrochloric acid 3 / 10 Question 3Two aqueous solutions P and Q have pH of 5 and 13 respectively. The correct inference is that a) solution P is of HCl and Q is of NH4OH b) solution P is of CH3COOH and Q is of Ca(OH)2 ( c) solution P is of HNO3 and Q is of NH4OH ( d) solution P is of CH3COOH and Q is of NaOH 4 / 10 Question 4.The pH of a solution is 7. How can you increase its pH? a) By adding a small amount of acid ( b) By adding a small amount of base. ( c) By adding a small amount of salt. ( d) By passing carbon dioxide gas through it 5 / 10 Question 5.Sodium carbonate is a basic salt because it is a salt of a) strong acid and strong base ( b) weak acid and weak base ( c) strong acid and weak base d) weak acid and strong base 6 / 10 Question 6.Which gas is evolved when acids react with metals? (a) O2 (b) CO2 (c) H2 (d) N2 7 / 10 Question 7.A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish- blue (a) Lemon juice (b) Vinegar (c) Common salt (d) An antacid 8 / 10 Question 8.Which of the following gives the correct increasing order of acidic strength a) Water < Acetic acid < Hydrochloric acid ( b) Water < Hydrochloric acid < Acetic acid ( c) Acetic acid < Water < Hydrochloric acid (d) Hydrochloric acid < Water < Acetic acid 9 / 10 Question 9.If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done? a) Wash the hand with saline solution. ( b) Wash the hand immediately with plenty of water and apply a paste of sodium hydrogencarbonate c) After washing with plenty of water and apply solution of sodium hydroxide on the hand. ( (d) Neutralise the acid with a strong alkali 10 / 10 Question 10.Farmers neutralise the effect of acidity of the soil by adding a) slaked lime b) gypsum c) caustic soda d) baking soda Your score isThe average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz