HARD
10th CBSE
IMPORTANT
Earn 100

All samples of water contain hydrogen and oxygen in the mass ratio 1:8. This is in agreement with the law of:

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Important Questions on Practicals

EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 9 - Practicals>EXERCISES>Q 68

The scientist who heated tin in a retort to verify the law of conservation of mass in a chemical reaction was

EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 9 - Practicals>EXERCISES>Q 1
The element essentially present in all acids is
EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 9 - Practicals>EXERCISES>Q 2
The gas evolved when zinc reacts with dilute HCl is
EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 9 - Practicals>EXERCISES>Q 3

When a drop of dilute hydrochloric acid is added to a blue litmus paper, the colour of the litmus paper changes to 
 

EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 9 - Practicals>EXERCISES>Q 4
The gas evolved when solid sodium carbonate is treated with dilute HCl is
EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 9 - Practicals>EXERCISES>Q 5

Which of the following compounds will react with hydrochloric acid to form salt and water? 

EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 9 - Practicals>EXERCISES>Q 6

Which of the following compounds in solution will make blue litmus paper red?

EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 9 - Practicals>EXERCISES>Q 7
A solution of hydrochloric acid is dropped on baking soda. The gas evolved is