Ca(HCO3) 2 (aq ) + Ca(OH)2 ------- 2CaCO3 +2H2O(1)
Answers
Answer:
SECTION I
(Reading Comprehension)
(Q. No. 1-10) Read the following passage from the lesson “Homework”.
Homework has historically been given to students to reinforce what they
learn at school, and ultimately to help them learn the material better. However, too
much homework is not helpful, and can be counter-productive. Excessive amounts
of time spent on completing homework can take away the kid’s social life, family
time, and it limits their participation in sports or other activities. The amount of
homework a teacher has to give to a student should be restricted. Critically
acclaimed author, Tamim Ansary reports that since 1981, the amount of homework
given to an average sixth class child has increased by more than fifty per cent. Many
people claim that the increase in homework dates as far back as 1957. The new
competition that emerged served as an incentive for schools to try to increase the
volume of the curriculum. The amount of homework increases with the increase in
class. Many teachers defend large amounts of homework, claiming that it helps to
prepare students for a world that is becoming increasingly competitive. However,
Dr. Kralovec, author of ‘The End of Homework’, argues that doing homework
during high school has little or no effect on successful study skills of the students
when they join college. Excessive amounts of homework can be harmful to kids both
physically and mentally. A lot of homework usually means a lot of books to carry.
Fifty-five percent of the Massachusetts ( an institution in the U.S.A.) children, as per
the survey by researchers of Simmons College, carry loads heavier than fifteen
percent of their body weight, which is the suggested limit. Carrying large amounts
of weight daily at a young age can do a lot of damage because bones are still in
development stage.
Explanation:
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