EASY
10th CBSE
IMPORTANT
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If pH of solution changes from 3 to 4, the solution becomes

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Important Questions on Practice Test Paper - 2

MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 7 - Practice Test Paper - 2>PRACTICE TEST PAPER - 2>Q 21
Which gas is evolved in the reaction of zinc metal and NaOH?
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 7 - Practice Test Paper - 2>PRACTICE TEST PAPER - 2>Q 22
Name the scientist who proposed Acid-Base theory.
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 7 - Practice Test Paper - 2>PRACTICE TEST PAPER - 2>Q 23
Name the gas evolved when Zinc metal reacts with HCl acid.
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 7 - Practice Test Paper - 2>PRACTICE TEST PAPER - 2>Q 24
What is the important property of an acid?
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 7 - Practice Test Paper - 2>PRACTICE TEST PAPER - 2>Q 25
A blue litmus paper was first dipped in dilute HCl  and then in dilute NaOH solution. It was observed that the colour of the litmus paper
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 7 - Practice Test Paper - 2>PRACTICE TEST PAPER - 2>Q 26
Barium sulphate is