Staff Selection Commission Combined Graduate Level Exam
Question : When two circles of radii $r_1$ and $r_2$ have their centres at a distance $d$ apart, the length of the common transverse tangent is:
Option 1: $\sqrt{d^2-\left(r_1-r_2\right)^2}$
Option 2: $\sqrt{d^2+\left(r_1-r_2\right)^2}$
Option 3: $\sqrt{d-\left(r_1-r_2\right)^2}$
Option 4: $\sqrt{d^2-\left(r_1+r_2\right)^2}$
Correct Answer: $\sqrt{d^2-\left(r_1+r_2\right)^2}$
Solution : The distance between the centres of the two circles is $d$. If the radii are r1 and r2, the length of their transverse common tangent is $\sqrt{d^{2}-(r_{1} + r_{2})^{2}}$. Hence, the correct answer is $\sqrt{d^{2}-(r_{1} + r_{2})^{2}}$.
Question : Directions: Select the option that is related to the fifth letter cluster in the same way as the second letter cluster is related to the first letter cluster and the fourth letter cluster is related to the third letter cluster. IDEOLOGY : YGILIYDC :: HARDWARE : YRUWDRUH :: ISOLATED : ?
Option 1: XCVFWIA
Option 2: BUSIMAQS
Option 3: JOKLERD
Option 4: DYTULISC
Correct Answer: DYTULISC
Solution : Given: IDEOLOGY : YGILIYDC :: HARDWARE : YRUWDRUH :: ISOLATED : ?
The word is reversed first. Consonants are kept as it is, and vowels are coded as follows: A→U; E→Y; I→C; O→I Like, IDEOLOGY Reverse of IDEOLOGY : YGOLOEDI After coding vowels→YGILIYDC And, HARDWARE
Question : Who established the Indian Civil Liberties Union in 1936 ?
Option 1: Subhash Chandra Bose
Option 2: Bal Gangadhar Tilak
Option 3: Jawahar Lal Nehru
Option 4: Rajendra Prasad
Correct Answer: Jawahar Lal Nehru
Solution : The Correct Answer is Jawahar Lal Nehru
Jawahar Lal Nehru established the Indian Civil Liberties union in 1936. This is the origin of Human right movement in India. While inaugurating ICLU, he said that the idea behind its formation was to have the
Question : Direction: Arrange the following words in a meaningful order.
1. Brother
2. Husband
3. Father
4. Son
5. Son-in-law
Option 1: 3, 2, 1, 5, 4
Option 2: 4, 1, 2, 5, 3
Option 3: 4, 1, 5, 2, 3
Option 4: 3, 1, 4, 2, 5
Correct Answer: 3, 2, 1, 5, 4
Solution : Given:
A meaningful order for these words based on family relationships could be as follows:
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".
The Chairman appointed her (as a secretary) as she is efficient.
(1) a secretary
(2) as secretary
(3) secretary
(4) No Improvement
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 4
Solution : The correct answer is the fourth option as the sentence is grammatically correct whereas in the first option, 'a secretary ' does not make sense as it has an error of conjunction. Therefore, the first option will be inappropriate.
The second option 'as secretary' is
Question : In which city of Assam is the Tea Festival celebrated every year?
Option 1: Guwahati
Option 2: Silchar
Option 3: Jorhat
Option 4: Dibrugarh
Correct Answer: Jorhat
Solution : The correct option is Jorhat.
The Tea Festival is celebrated in Jorhat, a city in the Indian state of Assam. Jorhat is known for its historical significance in the tea industry, and the Tea Festival is a popular annual event that celebrates the region's
Question : The table given below shows the production of bike and truck by five companies.
What is the ratio of the production of truck by company H and I together to the production bike by company J and K together?
Option 1: 14 : 17
Option 2: 15 : 14
Option 3: 14 : 19
Option 4: 14 : 15
Correct Answer: 14 : 15
Solution : Production of trucks by companies H and I together = 400 + 300 = 700 Production of bikes by companies J and K together = 350 + 400 = 750 ⇒ Ratio = 700 : 750 = 14 : 15 Hence, the correct
Question : Directions: Select the option that represents the letters that will complete the letter series when sequentially placed from left to right in the blanks below. MN _ _ SM _ PO _ _ N _ OSM _ P _ S
Option 1: PONSMPNO
Option 2: PNOSMPNO
Option 3: PONMSPNO
Option 4: PONSNOMP
Correct Answer: PONSMPNO
Solution : Given: MN _ _ SM _ PO _ _ N _ OSM _ P _ S
To complete the series, divide the series into equal parts as shown below – MN _ _ S/ M _ PO _/ _ N _ OS/ M _ P
Question : A watch dealer pays a 10% customs duty on a watch which costs Rs. 500 abroad. He desires to make a profit of 20% after giving a discount of 25% to the buyer. The marked price should be:
Option 1: Rs. 950
Option 2: Rs. 800
Option 3: Rs. 880
Option 4: Rs. 660
Correct Answer: Rs. 880
Solution : Let the Marked price of the watch be Rs. $y$ Actual CP of watch = 110% of Rs. 500 = Rs. $\frac{500\times 110}{100}$ = Rs. 550 According to the question, Profit percentage = 20% Discount percentage = 25% Let the marked price be Rs.
Question : Comprehension: Read the following passage and answer the questions given after it. The blowout of an Oil India Limited (OIL) gas well in Assam’s Tinsukia district last week is causing extensive damage to biodiversity and wildlife in the region, including the endangered hoolock gibbons and Gangetic dolphins. Baghjan, where the gas well blowout occurred on 27 May, is close to the Dibru-Saikhowa National Park, the Maguri-Motapung wetlands, and the forest villages of Barekuri which are habitat to the hoolock gibbon. Uncontrollable gas flow is continuing from the gas well. “What we are seeing is complete horror. Condensed oil is leaking continuously. The Maguri-Motapung wetlands (an important bird and biodiversity area) are very badly affected. There is a thick layer of crude oil on the water. Fish are dying and some cattle that graze in the adjacent wetlands are also dead,” said Mridupaban Phukon, a student and wildlife activist. “We have been informed by people in Barekuri villages that condensed oil coating leaves have started affecting the hoolock gibbon habitat. If not contained immediately the wetlands and national park will be devastated,” he said. Around 650 families have been evacuated from the affected areas and continue to be camped in three relief camps. “I visited the area on Sunday but it was barricaded. I could see the damage everywhere. Deadfish were floating and the vegetation was brown now. One Gangetic dolphin died soon after the leak. Usually, the Maguri jheel is rich with birdlife, but I could hardly spot any birds that day. I appeal for immediate help,” said Nabamita Ray, a doctor and wildlife enthusiast. Oil India’s crisis management team (CMT) members have started pumping water through the casing valve. Water is pumped continuously through the valve into the wellhead. Oil India has also contacted global experts to control the blowout. The water pumps are being installed in the nearby river (source of water) and pipeline-laying work is in progress. A blowout is the uncontrolled release of crude oil or natural gas from an oil well or gas well after pressure control systems have failed. Dibru-Saikhowa has recorded over 40 mammals, 500 species of birds, 104 fish species, 105 butterfly species and 680 types of plants. It harbours tigers, elephants, wild buffalos, leopards, hoolock gibbons, capped langurs, slow lorises, and Gangetic dolphins, besides critically endangered bird species such as the Bengal florican, white-winged duck, greater adjutant stork, white-rumped vulture, slender-billed vulture, and the very rare and endemic black-breasted parrotbill. All these are facing threats from the uncontrolled flow of oil. Question: Match the words (a, b, c) with their meaning (1, 2, 3). a. extensive 1. adjoining b. adjacent 2. thickened c. condensed 3. widespread
Option 1: a-3, b-2, c-1
Option 2: a-1, b-3, c-2
Option 3: a-2, b-3, c-1
Option 4: a-3, b-1, c-2
Correct Answer: a-3, b-1, c-2
Solution : The right choice is the fourth option.
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