GOV EXAM ADDA

1. Washing soda is the common name for

A. Sodium bicarbonate

B. Sodium hydroxide

C. Sodium carbonate

D. Calcium carbonate

Answer & Solution

2. The white vitriol is

Answer & Solution

3. The compound that can not be kept in glass vessel because it reacts with glass is

Answer & Solution

4. Milk is an example of

Answer & Solution

5. How many grams of NaOH are needed to make 100ml of 0.5 M solution of NaOH?(Atomic wight: Na=23,O=16,H=1)

Answer & Solution

6. Normal saline is an aqueous solution of sodium chloride of strength

Answer & Solution

7. Chemical name of vinegar is

A. Chloride of lime

B. Calcium

C. Sodium nitrate

D. Dilute acetic acid

Answer & Solution

8. How many grams of a dibasic acid(mol wt 200) should be present in 100ml of its aqueous solution to give 0.1(N) strength?

Answer & Solution

12. Which among the following is false about acids?

A. Most acids contain hydrogen

B. They are bad conductor of electricity in aqueous solution

C. They give H+ ions in aqueous solution

D. They turn blue litmus to red

Answer & Solution

13. Which acid is known as ‘King of chemicals’?

Answer & Solution

14. Acides turn _ litmus to __

Answer & Solution

15. The element common to all acid is?

Answer & Solution

16. Choose the acid salt from the following?

Answer & Solution

17. Which of the following is the weakest acid?

Answer & Solution

18. Ammonium chloride is acidic salt because it is a salt of

A. Strong acid and Weak base

B. Strong acid and strong base

C. Weak acid and weak base

D. Weak acid and Strong base

Answer & Solution

19. Which of the following is the strongest acid?

Answer & Solution

20. Which is known as carbolic acid?

Answer & Solution

1. Washing soda is the common name for

2. The white vitriol is

3. The compound that can not be kept in glass vessel because it reacts with glass is

4. Milk is an example of

5. How many grams of NaOH are needed to make 100ml of 0.5 M solution of NaOH?(Atomic wight: Na=23,O=16,H=1)

6. Normal saline is an aqueous solution of sodium chloride of strength

7. Chemical name of vinegar is

8. How many grams of a dibasic acid(mol wt 200) should be present in 100ml of its aqueous solution to give 0.1(N) strength?

9. Select the one having pH<7

10. Muriatic acid used in household work is diluted form of

11. The – OH group of –COOH can be replaced by using

12. Which among the following is false about acids?

13. Which acid is known as ‘King of chemicals’?

14. Acides turn _____ litmus to ______

15. The element common to all acid is?

16. Choose the acid salt from the following?

17. Which of the following is the weakest acid?

18. Ammonium chloride is acidic salt because it is a salt of

19. Which of the following is the strongest acid?

20. Which is known as carbolic acid?

14. Acides turn _ litmus to __