State whether each of the following statements is true or
false:
(a) Every positive integer is greater than 0.
(b) Every integer is either positive or negative.
Write the correct answer from the given four options:
Sania and Trapi visited Leh and Tawang respectively
during winter. Sania reported that she had experienced
–4°C on Sunday, while Trapi reported that she had
experienced –2°C on that day. On that Sunday
(A) Leh was cooler than Tawang.
(B) Leh was hotter than Tawang.
(C) Leh was as cool as Tawang.
(D) Tawang was cooler than Leh.
Can we have two acute angles whose sum is
(a) an acute angle? Why or why not?
(b) a right angle? Why or why not?
(c) an obtuse angle? Why or why not?
(d) a straight angle? Why or why not?
(e) a reflex angle? Why or why not?
If two rays intersect, will their point of intersection be the vertex of
an angle of which the rays are the two sides?
Find out the incorrect statement, if any, in the following:
An angle is formed when we have
(a) two rays with a common end-point
(b) two line segments with a common end-point
(c) a ray and a line segment with a common end-point
Atmospheric layer important for human beings is:
(a) Stratosphere
(c) Troposphere
(b) Mesosphere
(d) Ionosphere
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