Staff Selection Commission Combined Graduate Level Exam
Question : Hydrochloric acid is secreted by the cells lining the
Option 1: Oral cavity
Option 2: Stomach
Option 3: Ileum
Option 4: Colon
Correct Answer: Stomach
Solution : The correct answer is Stomach.
Stomach has a pH value between 1.5 - 3. It is because of the hydrochloric acid released by the parietal cells of the lining of stomach. Gastric juice release from the stomach activates the parietal cells of the stomach to
Question : A policeman chases a thief. The speeds of the policeman and the thief are 8 km/hr and 6 km/hr, respectively. If the policeman starts 10 minutes late, at what distance he will catch the thief?
Option 1: 6 km
Option 2: 8 km
Option 3: 4 km
Option 4: 2 km
Correct Answer: 4 km
Solution : The thief starts running and the policeman chases him after 10 minutes. The thief and the policeman run 6 km/hr and 8 km/hr, respectively. Their relative speed $=8 - 6= 2$ km/hr Distance covered by the thief in 10 minutes = $6\times \frac{10}{60} =
Question : In which year was the first winter edition of the Olympic Games organised?
Option 1: 1926
Option 2: 1920
Option 3: 1922
Option 4: 1924
Correct Answer: 1924
Solution : The correct answer is 1924.
The first Winter Olympic Games were organised in 1924. These inaugural Winter Games took place in Chamonix, France, and featured sports and events that are typically associated with cold-weather and snow-covered environments, such as ice hockey, figure skating, and skiing.
Question : Directions: Which two signs and two numbers should be interchanged in the following equation to make it correct? 150 × 15 + 14 – 9 ÷ 2 = 6
Option 1: 9, 2, –, ×
Option 2: 9, 2, ÷, ×
Option 3: 150, 2, ÷, –
Option 4: 15, 9, +, ÷
Correct Answer: 9, 2, ÷, ×
Solution : Given: 150 × 15 + 14 – 9 ÷ 2 = 6
Replace the given symbols and numbers in the options one by one with the original symbols and numbers in the given equation. First option: 9, 2, –, × 150 –
Question : Directions: A @ B means A is the husband of B; A & B means A is the father of B; A # B means B is the son of A. If F & G @ H # I @ J, then how is G related to J?
Option 1: Father
Option 2: Son
Option 3: Husband
Option 4: Father-in-law
Correct Answer: Father-in-law
Solution : Given: A @ B ⇒ A is the husband of B A & B ⇒ A is the father of B A # B ⇒ B is the son of A
As per the given information, the family tree will be as follows –
Here,
Question : At which Olympic Games did India win a gold medal for the first time?
Option 1: 1936 Berlin
Option 2: 1968 Mexico
Option 3: 1928 Amsterdam
Option 4: 1952 Helsinki
Correct Answer: 1928 Amsterdam
Solution : The correct option is 1928 Amsterdam.
India won its first Olympic gold medal in field hockey at the 1928 Amsterdam Olympics. India defeated Great Britain to take the gold. Major Dhyan Chand (the Wizard of Hockey) was part of that game and scored 14
Question : If the ratio of two numbers is 1 : 5 and their product is 320, the difference between the squares of these two numbers is:
Option 1: 1024
Option 2: 1256
Option 3: 1536
Option 4: 1435
Correct Answer: 1536
Solution : Let the numbers be $x$ and $5x$. According to the question, $x × 5x= 320$ $\Rightarrow 5x^2 = 320$ $\Rightarrow x^2 = 64$ $\Rightarrow x = 8$ So, the numbers are $8$ and $(8×5)=40$. Now, the difference between the squares of $8$ and $40$ $=
Question : Which one of the following is the correct sequence of ecosystem in the order of decreasing productivity?
Option 1: Oceans, mangroves, lakes, grasslands
Option 2: Mangroves, oceans, grassland, lakes
Option 3: Oceans, lakes, grassland, mangroves
Option 4: Mangroves, grasslands, lakes, oceans
Correct Answer: Oceans, lakes, grassland, mangroves
Solution : The correct option is Oceans, lakes, grassland, mangroves.
Because of the expanse of their water bodies and the abundance of diverse tiny algae (phytoplankton), oceans often have the highest primary production. When compared to other terrestrial ecosystems, lakes have a comparatively high
Question : The income of A is 80% of B's income and the expenditure of A is 60% of B's expenditure. If the income of A is equal to 90% of B's expenditure, then by what percentage are the savings of A more than B's savings?
Option 1: 125%
Option 2: 140%
Option 3: 100%
Option 4: 150%
Correct Answer: 140%
Solution : The income of A is 80% of B's income. The expenditure of A is 60% of B's expenditure. The income of A is equal to 90% of B's expenditure. Let the income of B be $100\text{x}$. So, Income of A $= (100\text{x} × \frac{80}{100})= 80\text{x}$
Question : The value of $5–\frac{8+2\sqrt{15}}{4}–\frac{1}{8+2\sqrt{15}}$ is equal to:
Option 1: $\frac{1}{4}$
Option 2: $1$
Option 3: $\frac{2}{3}$
Option 4: $\frac{1}{2}$
Correct Answer: $1$
Solution : Given: The expression is $5–\frac{8+2\sqrt{15}}{4}–\frac{1}{8+2\sqrt{15}}$. Rationalize the fraction, $\frac{1}{8+2\sqrt{15}}=\frac{1\times (8–2\sqrt{15})}{(8+2\sqrt{15})\times (8–2\sqrt{15})}$ = $\frac{8–2\sqrt{15}}{64–60}$ = $\frac{8–2\sqrt{15}}{4}$ The expression is $5–\frac{8+2\sqrt{15}}{4}–\frac{8–2\sqrt{15}}{4}$. = $\frac{20–8–2\sqrt{15}–8+2\sqrt{15}}{4}$ = $\frac{20–16}{4}$ = $\frac{20–16}{4}$ = $\frac{4}{4}$ = 1 Hence, the correct answer is $1$.
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