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8/8/2019 IJSO Question (Witout Ans.)
1/1
IJSO QUESTION WITHOUT ANSWER (29-10-10)
1. ABCD is a rectangle and lines DX, DY and XY are drawn as shown. Area of AXD is 5, Area of BXY is
4 and area of CYD is 3. If the area of DXY can be expressed as p where p N then p is equal to
AX
B
Y
CD
(A) 72 (B) 75 (C) 84 (D) 96
2. A small object of mass m slides down a rough uneven hilly plane from a height h and stops after travellinga certain distance BC on a horizontal surface. The work needed to be done to return the object to its initialposition along the same path would be :
(A) Zero
(B) mgh
(C) 2 mgh
(D) Cannot be ascertained
3. The ratio of sigma and pi bonds in benzene is-
(A) 4:1 (B) 2:1 (C) 1:1 (D) 2:2
4. If all bacteria of intestine die, then what will be the effect on body:
(A) Man will feel tired all the body
(B) It will cause blindness
(C) There will be no synthesis of vitamin -B Complex
(D) Excretion will be effected