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Class 10 · Science · Medium
→Between solutions with pH 8 and pH 12, which one is more basic?
Class 10 · Science · Medium
→Between solutions with pH 2 and pH 5, which one is more acidic?
Class 10 · Science · Medium
→If a solution has pH 10, what effect will it have on red litmus paper?
Class 10 · Science · Medium
→If a solution has pH 3, what effect will it have on blue litmus paper?
Class 10 · Science · Easy
→Which substance can be added to improve acidic soil?
Class 10 · Science · Easy
→Which salt is used for washing clothes and for removing the permanent hardness of hard water?
Class 10 · Science · Easy
→Which gas is formed at the anode in the chlor alkali process?
Class 10 · Science · Easy
→Which solution is electrolysed in the chlor alkali process?
Class 10 · Science · Easy
→Which gas helps put out fire in a soda acid fire extinguisher?
Class 10 · Science · Easy
→Which gas helps cakes and bread rise?
Class 10 · Science · Easy
→What is mixed with baking soda in baking powder?
Class 10 · Science · Easy
→Which gas is formed when baking soda is heated?
Class 10 · Science · Easy
→What colour appears when water is added to white anhydrous copper sulphate?
Class 10 · Science · Easy
→What colour do blue copper sulphate crystals become on heating?
Class 10 · Science · Easy
→What is water of crystallisation?
Class 10 · Science · Easy
→What happens to Plaster of Paris when water is added?
Class 10 · Science · Easy
→Which of the following substances does not change the colour of either red or blue litmus paper in an aqueous solution?
Class 10 · Science · Easy
→A farmer finds that the soil has a pH of 5. Which substance should be added to the soil to raise its pH for better crop growth?
Class 10 · Science · Easy
→What is the chemical name of bleaching powder?
Class 10 · Science · Easy
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