Paheli went to a wildlife sanctuary where she saw dense
vegetation of trees, shrubs, herbs and also a variety of animals
like monkeys, birds, elephants, snakes, frogs, etc. The most
likely location of this sanctuary is in the –
(a) temperate region
(b) tropical region
(c) polar region
(d) coastal region
Which of the following briefly describes the desert climate?
(a) Hot and humid
(b) Dry and humid
(c) Hot and dry
(d) Hot and wet
Out of the given definitions, which is the most appropriate
definition of climate?
(a) Changes in weather conditions in a year.
(b) Average weather pattern of many years.
(c) Change in weather pattern in a few years.
(d) Weather conditions during summer.
Discuss the major trends of modern industrial activities especially in
the developed countries of the world.
The maximum and minimum temperature displayed daily in
the weather bulletin refer to the –
(a) highest day temperature and lowest night temperature
of the day.
(b) highest day temperature and highest night temperature
of the month.
(c) temperature recorded at 12 noon and at mid night
(00.00 hrs).
(d) average highest temperature of day and average lowest
temperature of night.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
(a) What changes do you expect?
(b) Are these changes chemical in nature?
(c) Write a word equation for the chemical change, if any.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
(a) Do you think rust is different from iron?
(b) Can you change rust back into iron by some simple method?
(c) Do you think formation of rust from iron is a chemical change?
(d) Give two other examples of a similar type of change.
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