Question

1) Which among the following is a pure substance?
a)Aqueous NaCI
b) Molten NaCI
2)Identify the element in the bracket
K2(Cr)207
(Pb)s
Na2(Zn)02
3)Name a Compound which teacher
uses to teach in a classroom?
4)Go to the and find out at least three compounds used for baking a cake ​

Answer 1

Answer:

2.Pottassium dicromate

lead

sodium zincate

3.calcium carbonate

4.sodium bicarbonate

Answer 2

Answer:

1. Molten NaCl (Not Sure)

2. Cr - Cromium

Pb - Lead

Zn - Zinc

3. Chalk that is Calcium Carbonate CaCO3

4. Baking Soda - Sodium Bicarbonate

Baking Powder - Sodium Bicarbonate with other salts

Yeast releases Carbon Dioxide Gas CO2