Practice

Question 101

Branching series in a food chain is called

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Correct answer: (C) food web
Many interlinked branches of food chains together make a food web.

1 marks · 2023 · Set A

Question 102

The green plants capture _____ of the sunlight energy and convert it into food energy.

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Correct answer: (C) 1%
Green plants turn about 1% of the energy of sunlight into the energy of food.

1 marks · 2023 · Set A

Question 103

The Chipko Movement was strengthened under the leadership of

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Correct answer: (C) Sunderlal Bahuguna
The Chipko Movement gained wide strength under the leadership of Sunderlal Bahuguna.

1 marks · 2023 · Set A

Question 104

_____ are present in the first trophic level in the food chain.

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Correct answer: (A) Autotrophs
The first trophic level of a food chain holds the producers, that is the autotrophs.

1 marks · 2023 · Set A

Question 105

Arrange the following fractions in ascending order: 13/18, 29/36, 41/45, 51/60

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Correct answer: (A) 13/18 < 29/36 < 51/60 < 41/45
As decimals the fractions are 0·722, 0·806, 0·850 and 0·911, so the order is 13/18 < 29/36 < 51/60 < 41/45.

1 marks · 2023 · Set A

Question 106

How many squares are there in the given figure?

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Correct answer: (B) 30
The figure is a 4 × 4 grid. It holds 16 squares of 1×1, 9 of 2×2, 4 of 3×3 and 1 of 4×4. The total is 16 + 9 + 4 + 1 = 30 squares.

1 marks · 2023 · Set A

Question 107

A man fills a basket with eggs in such a way that the number of eggs added on each successive day is the same as the number already present in the basket. This way the basket gets completely filled in 24 days. After how many days, the basket was one-fourth full?

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Correct answer: (C) 22
The number of eggs doubles every day, so the basket was half full a day before it filled and a quarter full the day before that. The answer is 24 − 2 = 22 days.

1 marks · 2023 · Set A

Question 108

The sum of two numbers is 480. If the bigger number is decreased by 2% and the smaller number is increased by 10%, then the numbers obtained are equal. The larger number is approximately

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Correct answer: (B) 3300/13
Take the larger number as x: 0·98x = 1·10(480 − x), which gives x = 3300/13 ≈ 253·85.

1 marks · 2023 · Set A

Question 109

The next number in the finite sequence 486, 324, 216, 144, … is

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Correct answer: (A) 96
Each term is 2/3 of the one before, so the next term is 144 × 2/3 = 96.

1 marks · 2023 · Set A

Question 110

Which number should replace ‘?’ in the following series? 240, 120, ?, 180, 360, 900

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Correct answer: (A) 120
The multipliers through the series are 1/2, 1, 3/2, 2 and 5/2, so the missing term is 120.

1 marks · 2023 · Set A

Question 111

The term in the blank _____ : FICTION :: GRIND : BMDIY is

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Correct answer: (B) KNHYNTS
To turn GRIND into BMDIY every letter moves back five places: G→B, R→M, I→D, N→I and D→Y (wrapping round from the start of the alphabet). So for FICTION go the other way, five places forward: F→K, I→N, C→H, T→Y, I→N, O→T, N→S. The answer is KNHYNTS.

1 marks · 2023 · Set A

Question 112

There are 5 routes to go from Prayagraj to Patna and 4 routes to go from Patna to Kolkata. How many ways are possible for going from Prayagraj to Kolkata via Patna?

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Correct answer: (B) 20
There are 5 routes from Prayagraj to Patna and 4 from Patna to Kolkata, so the ways in all are 5 × 4 = 20.

1 marks · 2023 · Set A

Question 113

Select the most suitable statement.

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Correct answer: (D) More than one of the above
All three statements are true: a circle is a special case of an ellipse, no circle is a hyperbola, and every square is a rectangle.

1 marks · 2023 · Set A

Question 114

The word CODE is coded as 15161991 and STEP is coded as 18769122. Then SPOTE is coded as

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Correct answer: (B) 1822167691
The two words given are themselves the key to the code. Split CODE = 15161991 two digits at a time: C = 15, O = 16, D = 19, E = 91. In the same way STEP = 18769122 gives S = 18, T = 76, E = 91, P = 22—E = 91 in both proves the split right. So SPOTE = S(18) + P(22) + O(16) + T(76) + E(91) = 1822167691.

1 marks · 2023 · Set A

Question 115

The area of a circle is 40π². The area of a square with sides equal to radius of the circle is

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Correct answer: (C) 40π
From πr² = 40π², r² = 40π. The square on a side r has area r² = 40π.

1 marks · 2023 · Set A

Question 116

Select the odd word in the group: Book, Paper, Pencil, Pen, Eraser

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Correct answer: (A) Book
Pencil, pen and eraser are all things one writes with; among the options the book stands apart from them.

1 marks · 2023 · Set A

Question 117

If in English alphabet, A = 1, D = 2, P = 4, then which of the following denotes 3?

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Correct answer: (B) I
A, D and P stand at places 1, 4 and 16 in the alphabet, whose square roots are 1, 2 and 4. For 3 the place would be 9, that is I.

1 marks · 2023 · Set A

Question 118

Two numbers are in the ratio 21:10. If their HCF is 11, then the sum of the numbers is

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Correct answer: (A) 341
The numbers are 21 × 11 = 231 and 10 × 11 = 110, and their sum is 341.

1 marks · 2023 · Set A

Question 119

A profit of 10% is made when a smartphone is sold at P rupees and there is 4% loss when the smartphone is sold at Q rupees. Then P:Q is

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Correct answer: (D) More than one of the above
If the cost is C then P = 1·10C and Q = 0·96C, so P : Q = 110 : 96 = 55 : 48. Options A and C are the same ratio, so more than one is correct.

1 marks · 2023 · Set A

Question 120

In how many different ways can the letters of the word EDUCATION be arranged so that the vowels come together?

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Correct answer: (B) 14400
Taking the five vowels as one block there are 5 units in all, so the arrangements are 5! × 5! = 14,400.

1 marks · 2023 · Set A

TRE1 — General Studies, Shift 1