Question

UNIT TEST
I.
1.
2.
Answer the following by choosing correct option given below.
1 X3= 3
A gas evolved when dilute HCl reacts with sodium hydrogen carbonate is
a) 02
b) CO2
c) NO2
The range of pH for identification of a base is
a) 7 - 14
b) 1-6
c) 7.1 - 14
d) 0 - 14
The pH of a sample of vegetable soup was found to be 3.5. This soup likely to taste
d) CO
3.
a) Sour
b) Salt
c) Sweet
d) Bitter
II. Answer the following questions
1 X3= 3
4. Write a balanced chemical equation for the neutralization reaction.
5. Curd is not kept in copper and brass utensils, why?
6. What is the color of litmus in a solution of ammonium hydroxide?
2X24​

Answer 1

Answer:

1-- CO2

2--7-14

3--sour

4--NaOH + HCL= H2O +NaCl

5--both subtances are acidic. So the acid will react and the utensils will be corroded

6--blue