PAPER2PART2MATHEMATICS AND SCIENCE1.. The number n is doubled
and then y is added to it. The result is then divided by 2 and the
original number n is subtracted from it. The final result is (A)
y/22(B) n + y(C) n +Y/2(D) yAns. (A)2. A polyhedron has 6 faces and
8 vertices.How many edged does it have?(A) 12 (B) 14(C) 15 (D)
10Ans. (A)3. Forty-two cubes each of side 1 cm are glued together
to form a solid cuboid. If the perimeter of the base of the cuboid
is 18 cm, then its height, in cm, is(A) 2 (B) 3(C) 4 (D) 1Ans.
(B)4. In PQR, PQ = 4 cm, PR = 6 cm and QR = 3 cm. Which of the
following is correct?(A) Q > R (B) Q = R(C) R < P (D) R >
QAns. (A)5. In ABC and LMN, AB = LM, AC = LN and B = M. Then the(A)
Triangles must be congruent(B) Triangles will be congruent if B isa
right angle(C) Triangles are congruent only ifAB = AC(D) Triangles
cannot be congruentAns. (A)6. The area of a trapezium-shaped field
is 720 m2 , the distance between the two parallel sides is 20m and
the length of one of the parallel sides is 35m. the length of the
other parallel side is(A) 36 m (B) 37 m(C) 40 m (D) 35 mAns. (B)7.
If the cost price of 10 candles is equal to the selling price of 8
candles, the gain/ loss percent is(A) 20% loss (B) 20% gain(C) 25%
loss (D) 25% gainAns. (D)8. A boy has a thick paste of turmeric. On
adding this paste to hydrochloric acid and aqueous solution of
sodium hydroxide separately, what color (s) would he observe?(A)
Yellow in hydrochloric acid and red in sodium hydroxide(B) Pink in
hydrochloric acid and blue in sodium hydroxide(C) Blue in
hydrochloric acid and red in sodium hydroxide(D) Yellow in both
casesAns. (A)9. Science is considered to be questioning, exploring,
doing and investigating. WhichOf the following activities, carried
out by Dipika in teaching of Science, is best suited to satisfy
these criteria?(A) A group discussion on common diseases(B) A
debate on environmental issues(C) Project work on nature of
sound(D) Unit test on microorganismsAns. (C)10. The National
Curriculum Framework (NCF), 2005 recommends that teaching of
Science at upper primary stage should emphasize maximum on(A)
memorizing all scientific terms given in textbook(B) answering all
questions given in textbook exercises(C) improving students'
performance in examinations(D) relating classroom learning to life
outside the schoolAns. (D11. . The pseudopodia of amoeba are used
for(A) capture of food only(B) movement only(C) movement and
capture of food(D) sensing the food onlyAns. (C)12. . Select the
correct statement about biosphere reserves?(A) These are the areas
meant only for the conservation of plants and animals(B) These are
the areas which help to maintain the biodiversity and culture of
the areas(C) These are the protected areas reserved for wildlife
where they can freely use the habitats and natural resources(D)
These are the protected areas meant for the conservation of endemic
species onlyAns. (C
