Staff Selection Commission Combined Higher Secondary Level Exam
Question : Find the part of the given sentence that has an error in it. If there is no error, choose 'No error'. Around 30 percent of the Indian population are estimated to have latent TB.
Option 1: Indian population are estimated
Option 2: No error
Option 3: to have latent TB.
Option 4: Around 30 percent of the
Correct Answer: Indian population are estimated
Solution : The correct answer is the first option.
According to the subject-verb agreement rule, the verb must agree with its subject number. Here, the subject is singular, so the singular verb "is" should be placed.
Therefore, the correct answer is: "Around 30
Question : To conserve coral reefs the Government of India declared one of the following as a Marine Park :
Option 1: Andaman Islands
Option 2: Gulf of Kutch
Option 3: Lakshadweep Islands
Option 4: Gulf of Mannar
Correct Answer: Gulf of Kutch
Solution : The correct option is Gulf of Kutch.
In 1982, the Indian government established a 110 km2 area of the Gulf of Kutch as a marine national park to safeguard coral reefs. The peninsula areas of Kutch and Saurashtra, which are divided by
Question : The points $A(3,–2)$, $B(1,4)$, and $C(–2,x)$ are collinear. What is the value of $x$?
Option 1: 13
Option 2: –2
Option 3: 5
Option 4: 3
Correct Answer: 13
Solution : Given: $A(3,–2)$, $B(1,4)$ and $C(–2,x)$ are collinear. The point $(x_1,y_1)$, $(x_2,y_2)$, and $(x_3,y_3)$ are collinear if $\frac{y_2–y_1}{x_2–x_1}=\frac{y_3–y_1}{x_3–x_1}$ Putting the values, we have, ⇒ $\frac{4–(–2)}{1–3}=\frac{x–(–2)}{(–2)–3}$ ⇒ $\frac{6}{–2}=\frac{x+2}{–5}$ ⇒ $–30=–2x–4$ ⇒ $2x=26$ ⇒ $x=13$ Hence, the correct answer is 13.
Question : Directions: In the following question, select the related number from the given alternatives. 7 : 56 :: 9 : ?
Option 1: 63
Option 2: 81
Option 3: 90
Option 4: 99
Correct Answer: 90
Solution : Given: 7 : 56 :: 9 : ?
Like, 7 : 56→7 × 8 = 56 Similarly, follow the same pattern for 9 : ?→9 × 10 = 90
So, 9 is related to 90. Hence, the third option is correct.
Question : $9x^2+25 - 30x$ can be expressed as the square of:
Option 1: $-3x - 5$
Option 2: $3x+5$
Option 3: $3x-5$
Option 4: $3x^2-25$
Correct Answer: $3x-5$
Solution : Given: $9x^2+25-30x$ = $9x^2-30x+25$ = $(3x)^2-2×3x×5+(5)^2$ = $(3x-5)^2$ Hence, the correct answer is $(3x-5)$.
Question : A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that:
Option 1: The rubber ball suffers a greater change in momentum
Option 2: The metal ball suffers a greater change in momentum
Option 3: Both suffer the same change in momentum
Option 4: The initial momentum of the rubber ball is greater than that of the metal ball
Correct Answer: The rubber ball suffers a greater change in momentum
Solution : The correct option is The rubber ball suffers a greater change in momentum.
When a metal ball and a rubber ball of the same mass hit a wall with the same velocity, the rubber ball rebounds
Question : Bar Graph showing the number of cars sold by a reputed company during different months of the year. Look at the following bar graph and answer the question that follows: In which month was the sale highest and what was the percentage of the total sales for 6 months?
Option 1: September, 21.3% nearly
Option 2: September, 18.7% nearly
Option 3: July, 21.3% nearly
Option 4: May, 18.7% nearly
Correct Answer: September, 21.3% nearly
Solution : From the graph, it can be seen that the sales were highest in September. Total sales = $600+700+700+500+450+800 = 3750$ Sales in September = $800$ $\therefore$ Percentage = $\frac{800}{3750}\times 100 = 21.33$% Hence, the correct answer is September, 21.3% nearly.
Question : Moraines are formed in
Option 1: River deltas
Option 2: Arid regions
Option 3: Glacial regions
Option 4: Monsoon region
Correct Answer: Glacial regions
Solution : The correct answer is Glacial regions.
Moraine is material left behind by a moving glacier, and that material is usually soil and rock. A delta is an area near the mouth of a river or estuary where moving bodies of water deposit large amounts
Question : Directions: Select the correct mirror image of the given figure when the mirror is placed at MN as shown.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : As per the mirror image properties, closer things appear close to the mirror in the reflection. Here, according to the information provided, the mirror is placed on the right side of the figure (on line MN). So, the left side of the reflected image will appear
Question : Choose the incorrectly spelt word.
Option 1: WASSE
Option 2: FITTER
Option 3: COURIER
Option 4: COURSE
Correct Answer: WASSE
Solution : The first option is correct.
The incorrectly spelt word is wasse.
The correct spelling is vase. It is a container that is used for holding cut flowers.
The Question containing Inaapropriate or Abusive Words
Question lacks the basic details making it difficult to answer
Topic Tagged to the Question are not relevant to Question
Question drives traffic to external sites for promotional or commercial purposes
The Question is not relevant to User
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