Staff Selection Commission Combined Higher Secondary Level Exam
Question : Comprehension: In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank. Data 1._______ the Pioneer spacecraft of NASA apparently prove the theory that the high surface temperature of Venus is 2.______ to an atmospheric greenhouse effect caused mainly by a blanket of carbon dioxide. Such a greenhouse 3.______ is created when energy in the form of sunlight easily passes through a planet's atmosphere, warms its 4.____ and is converted to heat radiation that is then held in by the atmosphere from top to bottom. Venus has a relatively thin atmosphere like the Earth's, but Venus' atmosphere consists of more than ninety percent carbon dioxide, compared to less than four percent in that of the 5.____ Select the most appropriate option to fill in the blank No. 1.
Option 1: on
Option 2: across
Option 3: from
Option 4: through
Correct Answer: from
Solution : The third option is correct.
In this case, the sentence discusses data that has been collected or derived from the Pioneer spacecraft of NASA. From is the appropriate preposition to indicate that the data originates from or is obtained from this particular source.
Using from
Question : Directions: In the following number pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the option in which the numbers are related in the same way as the numbers of the following pairs. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 - operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (9, 74) (5, 18)
Option 1: (8, 27)
Option 2: (20, 364)
Option 3: (13, 162)
Option 4: (14, 106)
Correct Answer: (13, 162)
Solution : Given: (9, 74); (5, 18)
Subtract 7 from the square of the first number to obtain the second number – (9, 74)→92 – 7 = 81 – 7 = 74 (5, 18)→52 – 7 = 25 – 7 = 18 Let's check
Question : Which natural bioactive water-soluble phenolic compound is present in fruits, vegetables and grains with red, purple, blue or black hues?
Option 1: Coumarin
Option 2: Anthocyanin
Option 3: Quercetin
Option 4: Naringenin
Correct Answer: Anthocyanin
Solution : The correct answer is Anthocyanin.
Plants, especially fruits, flowers and tubers, contain blue, red, or purple pigments called anthocyanins. Anthocyanin is a red pigment in acidic environments and a blue pigment in alkaline environments. Natural antioxidants called anthocyanins can strengthen the immune system against
Question : A basket contains 300 mangoes. 75 mangoes were distributed among some students. Find the percentage of mangoes left in the basket.
Option 1: 70%
Option 2: 72%
Option 3: 76%
Option 4: 75%
Correct Answer: 75%
Solution : Given: A basket contains 300 mangoes. 75 mangoes were distributed among some students. The required percentage of mangoes left in the basket = $\frac{300–75}{300}$ ×100 = $\frac{225}{300}×100$ = 75% Hence, the correct answer is 75%.
Question : World Wildlife Fund was founded in:
Option 1: 1965
Option 2: 1969
Option 3: 1992
Option 4: 1961
Correct Answer: 1961
Solution : The correct option is 1961.
The World Wildlife Fund for Nature is an international non-governmental organisation that was established in 1961 and strives to protect wildlife areas and lessen the effects of human activity on the environment. The headquarters of the World Wildlife Fund
Question : When was Kapil Dev awarded the Padma Shri Award?
Option 1: 1981
Option 2: 1980
Option 3: 1982
Option 4: 1983
Correct Answer: 1982
Solution : The correct option is 1982.
In 1982, Kapil Dev received the Padma Shri Award. In Test (international match) cricket, he is the only player in the world to have amassed an all-rounder's double of 4,000 Test runs and 400 Test wickets.
Question : Directions: Four number pairs have been given out of which three are alike in some manner and one is different. Select a different one. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
Option 1: 31 – 165
Option 2: 24 – 125
Option 3: 13 – 75
Option 4: 19 – 105
Correct Answer: 24 – 125
Solution : Let's check the options – First option: 31 – 165; 31 × 5 = 155; 155 + 10 = 165 Second option: 24 – 125; 24 × 5 = 120; 120 + 10 = 130 ≠ 125 Third option: 13 – 75; 13
Question : A can do a piece of work in 12 days and B can do the same work in 15 days. If both do the work together, then in how many days will the work be completed?
Option 1: $7 \frac{2}{3}$
Option 2: $6 \frac{2}{3}$
Option 3: $5 \frac{2}{3}$
Option 4: $8 \frac{2}{3}$
Correct Answer: $6 \frac{2}{3}$
Solution : Given, A can do a piece of work in 12 days and B can do the same work in 15 days. Let the total work be 1 unit. Amount of work done by A in 1 day = $\frac{1}{12}$ Amount of work done by
Question : Directions: In the following question, select the related number from the given alternatives. 21 : 3 :: 574 : ?
Option 1: 113
Option 2: 82
Option 3: 97
Option 4: 23
Correct Answer: 82
Solution : Given: 21 : 3 :: 574 : ?
Here, divide the first number of each pair by 7 to get the second number. Like, 21 : 3→21 ÷ 7 = 3 Similarly, for 574 : ?→574 ÷ 7 = 82
So, 574 is related to
Question : Comprehension:
In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Harry Potter was first introduced in the novel 'Harry Potter and the Philosopher's Stone' as an orphan who is (1)__________ by his guardian aunt and uncle and their son. On his 11th birthday, Harry discovers that his parents were a witch and a wizard and that he, a wizard himself, has been invited to (2)_________ Hogwarts School of Witchcraft and Wizardry. He also learns that his parents had not (3)__________ in a car accident, as his aunt and uncle had told him, but that they instead had been murdered by an evil wizard named Voldemort. Harry was the only person to have ever (4)_________ an attack by Voldemort-by somehow (5)__________ the latter's 'killing curse'—which left him with a lightning-bolt-shaped scar on his forehead.
Select the most appropriate option to fill in the blank number 2.
Option 1: see
Option 2: escort
Option 3: accompany
Option 4: attend
Correct Answer: attend
Solution : The fourth option is the correct answer.
In the context of the passage, Harry Potter has been invited to Hogwarts School of Witchcraft and Wizardry. The word attend is used to indicate going to or being present at an event, which fits perfectly with the
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