| | - Teacher Name : Rakesh
- Total Questions : 22
- Time Allowed : 60
- Total Marks : 22
Q 1 :Some fruits like mango, lemon, raw grapes, orange, etc have a sour taste due to the presence of Q 2 :Nettle sting is a natural source of which acid? Q 3 :NaOH turns phenolphthalein solution Q 4 :An aqueous solution turns red litmusblue. Excess addition of which of the following solutions would reverse the change? Q 5 :Chemical formula of washing soda is Q 6 :What is the colour of the product formed when copper oxide reacts wth dilute hydrochloric acid? Q 7 :Alkalis are Q 8 :Sodium carbonate is a basic salt because it is salt of a Q 9 :Which of the following salts will give acidic solution when dissolved in water? Q 10 :Copper sulphate crystals when heated strongly. Lose their water of crystallisation to give anhydrous copper sulphate accompanied by a change in colour from Q 11 :Sodium hydroxide is used Q 12 :Brine is an aqueous solution of Q 13 :How many water molecules does the hydrated ferrous sulphate contain? Q 14 :At what temperature is gypsum heated to form plaster of paris ? Q 15 :Tooth enamel is made up of Q 16 :Many salts absorb water from the atmosphere.This property of salts is called Q 17 :Sodium hydroxide is a Q 18 :Egg shell is made up of Q 19 :Which one of the following salts does not contain water of crystallisation ? Q 20 :Rain is called 'acid rain' when its pH Q 21 :Which one of the following series is in the correct increasing order of acidic strength? Q 22 :Which one of the following salts will dissolve in water to form an alkaline solution?
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