GS: Hindi / English · Language questions stay in their original language.
120 questions · 120 marks · 2 hours
Choose one option per question.
Tap an option to check it, or open “See answer”.
Correct answer: (C) food web
Many interlinked branches of food chains together make a food web.
Correct answer: (C) 1%
Green plants turn about 1% of the energy of sunlight into the energy of food.
Correct answer: (C) Sunderlal Bahuguna
The Chipko Movement gained wide strength under the leadership of Sunderlal Bahuguna.
Correct answer: (A) Autotrophs
The first trophic level of a food chain holds the producers, that is the autotrophs.
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.
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—in all 16 + 9 + 4 + 1 = 30 squares.
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: 24 − 2 = 22 days.
Correct answer: (B) 3300/13
Take the larger number as x: 0·98x = 1·10(480 − x), which gives x = 3300/13 ≈ 253·85.
Correct answer: (A) 96
Each term is 2/3 of the one before, so the next term is 144 × 2/3 = 96.
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.
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.
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.
Correct answer: (D) More than one of the above
A circle is a special ellipse with its two axes equal—so the first is right. A circle and a hyperbola are different conics—so the second is right. A square is a special rectangle with all sides equal—so the third is right too. All three holding, the answer is ‘more than one’.
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.
Correct answer: (C) 40π
From πr² = 40π², r² = 40π. The square on a side r has area r² = 40π.
Correct answer: (A) Book
Pencil, pen and eraser are all things one writes with; among the options the book stands apart from them.
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.
Correct answer: (A) 341
The numbers are 21 × 11 = 231 and 10 × 11 = 110, and their sum is 341.
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.
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.