Science
(i) A compound 'X' which is prepared from gypsum has the property of hardening when mixed with proper quantity of water.
Identify 'X' and write its chemical formula.
(ii) State the difference in chemical composition between baking soda and baking powder.
Chemical Compound
46 Likes
Answer
(i) Plaster of paris — CaSO4.H2O
(ii) Difference in chemical composition between baking soda and baking powder:
| Baking soda | Baking powder |
|---|---|
| It has only one ingredient – sodium hydrogen carbonate [NaHCO3]. | For making baking powder, baking soda is mixed with mild edible acids such as (tartaric acid). |
Answered By
21 Likes
Related Questions
Assertion (A) : Blood clotting prevents excessive loss of blood.
Reason (R) : Blood clotting is due to blood plasma and white blood cells present in the blood.
- Both (A) and (R) are true and (R) is the correct explanation of (A).
- Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- (A) is true, but (R) is false.
- (A) is false, but (R) is true.
Assertion (A) : The strength of the magnetic field produced at the centre of a current carrying circular coil increases on increasing the number of turns in it.
Reason (R) : The current in each circular turn has the same direction and the magnetic field due to each turn then just adds up.
Write balanced chemical equation for the reaction that occurs when :
(i) blue coloured copper sulphate crystals are heated and
(ii) Sodium hydrogen carbonate is heated during cooking.
(a) Write the role of insulin in regulating blood sugar levels in human body. Mention the disease caused due to it.
(b) How is the timing and the amount of release of insulin in the blood regulated ?