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Class 10 Acid base and Salts Important questions-3


In this page we have Important Questions for Class 10 Acid Base and Salts -3 . Hope you like them and do not forget to like , social shar and comment at the end of the page.

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Question 1

Name four gases that can be prepared in the laboratory using dilute H2SO4. Show how they can be prepared?

Question 2

Match the column

Column A

Column B

HCL

Salt

NaOH

Acid

HNO3

Base

NH4OH


CuCO3


(NH4)2SO4


Question 3

A milkman adds a very small amount of baking soda to fresh milk.

(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline?

(b) Why does this milk take a long time to set as curd?

Question 4

Fill in the blanks.
(a) Chemical formula for bleaching powder is  ______   .
(b) Acids ______ _______  bases to form ________ and water.
(c) The term pH was coined by _______ .
(d) an acidic solution contains  _____ _______ ions .
(e)  ________ ________ is used in softening water.
(f)  ______ medicine used to treat indigestion

(g) Calcium Sulphate hemihydrate is popularly known as _____ ___ _____.

 (i) ________ are present in aerated drinks

Question 5

Match the column

Column A

Column B

Common Salt

NaOH

Baking soda

Na2CO3

Caustic soda

NaCl

Washing Soda

NaHCO3


Question 6

True and False statement

a) Vinegar contains acetic acid

b) Formic acid is a weak acid

c) Acids gives H+ ion in water

d) Baking soda is used for Softening of hard water

e) pH of a solution can vary from 0-14.

f) Heat is evolved during ionization.

g) NaCl is a base

h) Acids turns blue litmus solution to red

Question 7

Short answer type questions

a) What is lime water?

b) How plaster of paris is formed?

c) What is the pH of our stomach

d) Name a strong base and a weak base.

e) Name a hydrated salt

f) What is a universal indicator? What is its advantage?

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