Staff Selection Commission Sub Inspector Exam
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
(No sooner I saw) the lizard than I ran away.
(1) As soon as I saw
(2) No sooner I had seen
(3) No sooner did I see
(4) No Improvement
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 3
Solution : The correct choice is the third option.
The phrase No sooner I saw should be replaced with No sooner did I see. When No sooner...than is used, it's necessary to use the auxiliary verb did to form an inversion.
Therefore, the correct sentence should be:
Question : Directions: If P denotes ×, Q denotes ÷, R denotes +, and S denotes –, then what will come into place of ? in the following equation? $\sqrt{256}$ P 3 S 66 Q 11 P 5 R 43 = ?
Option 1: 72
Option 2: 58
Option 3: 61
Option 4: 69
Correct Answer: 61
Solution : Given: P denotes ×, Q denotes ÷, R denotes +, and S denotes – $\sqrt{256}$ P 3 S 66 Q 11 P 5 R 43 = ?
After replacing the letters with given symbols, the equation becomes – = $\sqrt{256}$ × 3 – 66 ÷
Question : The Durand Cup, Santosh Trophy, and Rovers Cup are related to which sport?
Option 1: Hockey
Option 2: Cricket
Option 3: Football
Option 4: Badminton
Correct Answer: Football
Solution : The correct answer is Football.
Football-related championships include the Rovers Cup, the Santosh Trophy, and the Durand Cup.
Question : Select the most appropriate ANTONYM of the given word.
HUMILITY
Option 1: timidity
Option 2: servility
Option 3: vanity
Option 4: modesty
Correct Answer: vanity
Humility means the state of being humble.
Vanity means inflated pride in oneself, which makes it the correct antonym for the given word.
The meanings of the other options are as follows:
Question : Directions: A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in the two matrices given below. The columns and rows of Matrix (I) are numbered from 0 to 4 and that of Matrix (II) are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g. C can be represented by 55, 69, etc., and D can be represented by 59, 68, etc. Similarly, you have to identify the set for the word CHILD.
Option 1: 55, 13, 42, 79, 68
Option 2: 96, 22, 97, 24, 13
Option 3: 96, 13, 42, 79, 13
Option 4: 55, 22, 97, 24, 68
Correct Answer: 55, 13, 42, 79, 68
Solution : Given: CHILD
Number representations of each letter – C→55, 69, 78, 87, 96 H→04, 13, 22, 31, 40 I→01, 10, 24, 33, 42 L→56, 65, 79, 88, 97 D→59, 68, 77, 86, 95
Let's check the options – First option:
Question : The greatest among the following numbers $(3)^{\frac{1}{3}}, (2)^{\frac{1}{2}}, 1, (6)^{\frac{1}{6}}$ is:
Option 1: $(2)^{\frac{1}{2}}$
Option 2: 1
Option 3: $(6)^{\frac{1}{6}}$
Option 4: $(3)^{\frac{1}{3}}$
Correct Answer: $(3)^{\frac{1}{3}}$
Solution : To find the greatest number, we have to find the LCM of the denominators of the power. Given numbers are = $(3)^{\frac{1}{3}},(2)^{\frac{1}{2}}, 1, (6)^{\frac{1}{6}}$ The LCM of 3, 2, 1 and 6 = 6 Raised the power 6 to each of the numbers. $⇒ [(3)^{\frac{1}{3}}]^6
Question : If $x=\frac{2 \sin \theta}{(1+\cos \theta+\sin \theta)}$, then the value of $\frac{1-\cos \theta+\sin \theta}{(1+\sin \theta)}$ is:
Option 1: $\frac{x}{(1+x)}$
Option 2: $x$
Option 3: $\frac{1}{x}$
Option 4: $\frac{(1+x)}{x}$
Correct Answer: $x$
Solution : Given expression, $x=\frac{2 \sin \theta}{(1+\cos \theta+\sin \theta)}$ Multiply and divide by $1-\cos \theta+\sin \theta$, ⇒ $x=\frac{2 \sin \theta}{(1+\cos \theta+\sin \theta)}\times\frac{1-\cos \theta+\sin \theta}{1-\cos \theta+\sin \theta}$ ⇒ $x=\frac{2\sin\theta(1-\cos \theta+\sin \theta)}{(1+\cos \theta+\sin \theta)({1-\cos \theta+\sin \theta})}$ ⇒ $x=\frac{2\sin\theta(1-\cos \theta+\sin \theta)}{(1+\sin\theta)^2-(\cos^2\theta)}$ ⇒ $x=\frac{2\sin\theta(1-\cos \theta+\sin \theta)}{(1+\sin\theta)^2-(1-\sin^2\theta)}$ [As $\cos^2\theta+\sin^2\theta=1$] ⇒ $x=\frac{2\sin\theta(1-\cos \theta+\sin
Question : What is the chemical formula for the aldehyde group?
Option 1: –COOH
Option 2: –OH
Option 3: –CH2O
Option 4: –CHO
Correct Answer: –CHO
Solution : The correct answer is -CHO.
The chemical formula of an aldehyde group is -CHO. The general formula for an aldehyde is RCHO. It is a functional group that contains one carbonyl group, one hydrogen and one R group attached to a carbonyl carbon
Question : Which of the following pairs of chemical elements and their symbols is incorrect?
Option 1: Phosphorus – P
Option 2: Potassium – Po
Option 3: Iron – Fe
Option 4: Iodine – I
Correct Answer: Potassium – Po
Solution : The correct answer is Potassium – Po.
The pair with an incorrect chemical symbol is "Potassium-Po". The correct symbol for potassium is K, not Po. Phosphorus is represented by P, iron by Fe and iodine by I, and these are accurate chemical
Question : Which scientist got the particle name for 'mesotron' changed to 'meson'?
Option 1: Hans Adolf Krebs
Option 2: Carl David Anderson
Option 3: Dr. Homi Jehangir Bhabha
Option 4: Willian Buehler
Correct Answer: Dr. Homi Jehangir Bhabha
Solution : The correct answer is Dr. Homi Jehangir Bhabha.
In February 1939, Homi Jehangir Bhabha published a short paper in Nature Journal proposing the name meson. Bhabha's name remains in use to this day and is used to describe a class of
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