Page 2 - HOME ASSIGNMENT-1(OBJECTIVE & SUBJECTIVE QUESTIONS)
P. 2
SUBJECTIVE:
S.L Questions Mark Skill
No.
Q.1 1 R
Write the chemical equation representing the action of
atmospheric CO2 gas on bleaching powder when left
exposed in open. [CBSE 2013]
Q.2 1 u
Which among distilled water, tap water and sea water
is the best conductor of electricity? [CBSE 2010, 2011]
Q.3 What happens when chlorine is passed over slaked lime at 313 3 R+A
K? Write chemical equation of the reaction involved and state two
uses of the product. [CBSE 2010]
Q.4 What is bleaching powder chemically? Give a reaction 3 U+A
for its preparation. State one of its use. [CBSE 2011]
Q.5 5 HOT
(a) Dry pellets of a base ‘X’ when kept in open absorbs moisture
and turns sticky. The compound is also formed by chlor-alkali
process. Write the chemical name and formula of X. Describe
chlor-alkali process with balanced chemical equations. Name the
type of reaction occurs when X is treated with dilute hydrochloric
acid. Write the relevant chemical equation.
(b) While diluting an acid, why is it recommended that the acid
should be added to water and not water to the acid? [CBSE
2012]
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