Question

(a) A white powder is an active ingredient of antacids and is used in preparation of cakes.
Name the compound and state how it is manufactured? Give chemical equation.
(b) Write an equation to show the effect of heat on this compound,
(a) Name any two amphoteric oxides.
(b) What is thermite reaction? Mention its application.
OR
When a metal X is treated with cold water, it gives a basic compound Y with molecular formula
XOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y and Z
and also write the reaction involved.
Ig of solid sodium chloride is taken in a clean and dry test tube and 2mL of conc. sulphuric
acid is added to it. If the gas evolved is tested first with dry and then with wet blue litmus paper,
in which case will the litmus paper change colour? Give reason for your answer. What inference
can be drawn about the nature of the evolved gas? Support your answer with chemical equation
for the reaction
(a) What is meant by double circulation?
(b) Mention two differences between arteries and veins.
How does feedback mechanism regulate the hormone secretion?
er2pos
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balance to the car and and third rohin​

Answer 1

Answer:

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