Class 10th Hindi 10th test

If the pH of the solution is greatter than 7 then the solution will be

• Acidic

• Basic

• Neutral

• All of the above

What is the common name of the compound CaOCl₂

• Caustic soda

• Baking soda

• Bleaching powder

• Washing soda

What is the formula of Gypsum

• CaSO₄.1/2H₂O

• CaSO₄.H₂O

• CaSO₄

• CaSO₄.2H₂O

What is the formula of plaster of paris

• CaSO₄.1/2H₂O

• CaSO₄.2H₂O

• CaSO₄

• CaSO₄.H₂O

What is the formula of Washing Soda

• Na₂CO₃

• Na₂CO₃.7H₂O

• Na₂CO₃.10H₂O

• Na₂CO₃.H₂O

A solution turns red litmus blue, its pH is likely to be

• 1

• 4

• 5

• 10

Which of the following is used in glass, soap and paper industry

• Washing soda

• Caustic soda

• Baking soda

• Bleaching powder

Which of the following is used for removal of permanant hardness of water

• Washing soda

• Baking soda

• Caustic soda

• Bleaching powder

Which of the following is common salt

• NaOH

• NaCl

• Na₂CO₃

• Na₂CO₃.10H₂O

Which of the following is organic acid

• Sulphuric acid

• Hydrochloric acid

• Nitric acid

• Acetic acid