41. The dark coloured amorphous substance that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate is called ____
(A) leachate
(B) decomposer
(C) humus
(D) detritus
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42. ‘GMO is –
(A) Genetically Mutant Organism
(B) Genetically Mixed Organism
(C) Genetically Modified Organism
(D) Genetically Modern Organism
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43. Which of the following disease is caused by a bacterium ?
(A) Polio
(B) Filariasis
(C) Typhoid
(D) Haemophilia
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44. Which hormone deficiency in the body causes diabetes ?
(A) Thyroxine
(B) All of these
(C) Adrenaline
(D) Insulin
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45. Who trap the maximum sun energy ?
(A) Grasses
(B) Animals
(C) Algae
(D) Trees
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46. A thick fleshy grows horizontally, having dry scale leaves, terminal buds. adventitious roots called as –
(A) Bulb
(B) Rhizome
(C) Tuber
(D) Corm
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47. Genes which code for a pair of contrasting traits are known as –
(A) Alleles
(B) Progenies
(C) Hybrids
(D) Filials
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48. Sex determination in human beings is based on ________ method.
(A) XO
(B) Zw
(C) XX-XY
(D) XX
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49. A food chain always starts with –
(A) Excretion
(B) Respiration
(C) Photosynthesis
(D) Digestion
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50. What are the symptoms of Rh disease ?
(A) Fast heart rate
(B) All of these
(C) Large abdomen
(D) Lack of energy
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51. A cylindrical vessel of base radius 20 cm filled up to a height of 32 cm with juice. The juice is filled in cylindrical glass of radius 4 cm upto a height of 8 cm. How many such glasses can be filled ?
(A) 20
(C) 100
(B) 120
(D) 50
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52. If P(9a-2, -5) divides line segment joining the points A(3a+1,-3) and B(8a, 5) in the ratio 3:1, then the values of a and b are –
(A) a=1, 6 =3
(B) a=1, b=-3
(C) a=-1, b =-3
(D) a=-1, 6 =3
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53. The two opposite vertices of a square are (-1,2) and (3, 2), then the coordinates of the other two vertices are –
(A) (1,0) and (1,4)
(B) (-1,0) and (1,-4)
(C) (1,0) and (-1, 4)
(D) (-1,0) and (-1, 4)
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54. In figure ZXYZ=64º and XY is produced to point P. If ray YQ bisect ∠ZYP, then the value of ∠XYQ is
(A) 122°
(B) 302°
(C) 116°
(D) 105°
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55. Successive discounts of p% and q% : equivalent to a discount of
(A) (p+4)%
(B) (p+q/2)%
(C) (p+q-pq/100)%
(D) (p+q- pq/100)%
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56. ₹ 4,000 was divided into two parts such a way that first part was invested at 3% and the second at 5% per annum. If the whole simple interest from both the investments for one year is ₹ 144 Then the amount of the first part is
(A) ₹ 2,700
(B) ₹ 2,400
(C) ₹ 2,500
(D) ₹ 2,800
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57. A man spends 75% of his income. His income increases by 20% and his expenditure also increases by 10%, then the percentage increase in his savings is –
(A) 10%
(B) 50%
(C) 25%
(D) 20%
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58 The ratio of an external angle and an internal angle of a regular polygon is 1:5. The number of sides in the polygon is –
(A) 12
(B) 10
(C) 8
(D) 6
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59. Mohan bought two cows in ₹ 30,000. By selling one at a loss of 15% and other at a gain of 19%, he found that the selling price of both cows is the same. The cost price of both the cows are –
(A) ₹ 17,500, ₹ 12,500
(B) ₹ 20,000, ₹ 10,000
(C) ₹ 18,000, ₹ 12,000
(D) ₹ 15,000, ₹ 15,000
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60. The circumference of two circles are in the ratio 2:3, then the ratio of their areas
is –
(A) 2:3
(B) 4:9
(C) 9:4
(D) 3:2
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