Staff Selection Commission Combined Graduate Level Exam
Question : Find the exact value of $\cos 120°$.
Option 1: 1
Option 2: 0
Option 3: – 0.5
Option 4: 0.5
Correct Answer: – 0.5
Solution : $\cos 120°$ $= \cos(90° + 30°)$ $=-\sin 30°$ (we know that $\cos (90° + x) = –\sin x$) $= -\frac{1}{2}$ $= -0.5$ Hence, the correct answer is – 0.5.
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.
In today's world, handling money and making purchases and sales come naturally to us. However, prior to the development of any kind of currency, people (1)____ in a variety of ways. The barter trade was the simplest of them all. People would trade the things they owned for the things they wanted in this kind of (2)____. For example, if someone wanted a set of clothes and had a cow left over, he would have to find someone who would want a cow and be willing to give away a set of clothes. However, it wasn't as straightforward as 'give-and-take', and people would be cheated. The (3)____ of money finally took root in people's minds after many years. The usually erratic barter trade eventually gave way to the monetary method of exchange as such. At first, anything could be used, such as hooks, money beads, shells, or trinkets. The first gold coins were used as currency near Turkey, and each coin had a different denomination. In the kingdom of Lydia, the value of each coin was first standardised around 700 BC. However, as time passed, the idea of carrying a bulky coin pouch became less (4)____ because it attracted robbers. Checks were first created at that time by Greek and Roman traders who purchased goods from distant cities. Because they could only be used by the person whose name was on them, these were not only lightweight but also deterred robberies. In accordance with this concept, banks later issued notes in exchange for (5)____ gold that could be used as cash.
Select the most appropriate option to fill in the blank no. 3.
Option 1: concept
Option 2: belief
Option 3: notion
Option 4: opinion
Correct Answer: concept
Solution : The correct choice is the first option.
The blank refers to the development of the idea of using money or currency instead of the barter system. The word that best fits in this context is concept, which means an abstract or general idea. People
Question : Which of the following festivals is associated with the term 'ties of protection'?
Option 1: Baisakhi
Option 2: Karwa Chauth
Option 3: Chhath Pooja
Option 4: Raksha Bandhan
Correct Answer: Raksha Bandhan
Solution : The correct option is Raksha Bandhan.
The festival associated with the term ties of protection is Raksha Bandhan. Raksha Bandhan is a Hindu festival that celebrates the bond between brothers and sisters. During this festival, sisters tie a decorative thread called a rakhi around
Question : Directions: M is the son of P. Q is the granddaughter of O, who is the husband of P. How is M related to O?
Option 1: Son
Option 2: Daughter
Option 3: Mother
Option 4: Father
Correct Answer: Son
Solution : As per the given information, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female in the figure.
So, from the above family tree, M is the son of O. Hence, the first option
Question : In a city, 40% of the people are illiterate and 60% are poor. Among the rich, 10% are illiterate. The percentage of the illiterate poor population is:
Option 1: 36%
Option 2: 60%
Option 3: 40%
Option 4: 50%
Correct Answer: 36%
Solution : Let the total population of the city be 100. The number of illiterate people = 40% of 100 = 40 The number of poor people = 60% of 100 = 60 The number of rich people = (100 – 60) = 40 The number of
Question : Directions: Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number. 15 : 125 :: 27 : ? :: 36 : 1728
Option 1: 689
Option 2: 749
Option 3: 790
Option 4: 729
Correct Answer: 729
Solution : Given: 15 : 125 :: 27 : ? :: 36 : 1728
Like, 15 : 125→(15 ÷ 3)3 = (5)3 = 125 And, 36 : 1728→(36 ÷ 3)3 = (12)3 = 1728 Similarly, for 27 : ?→(27 ÷ 3)3 =
Question : Which of the following was India's first interplanetary mission ?
Option 1: Chandrayaan Mission
Option 2: Mangalyaan Mission
Option 3: Aryabhatta Mission
Option 4: Philae Mission
Correct Answer: Mangalyaan Mission
Solution : The correct answer is Mangalyaan Mission.
India's first planetary mission was Mars orbiter Mission also called as Mangalyaan which was launched on 5th November, 2013. It was launched by the PSLV C25 rocket. Through this India achieved Mars orbit insertion in its first attempt
Question : Which of the following Dynasties established the kingdom of Vijayanagara?
Option 1: Sangama Dynasty
Option 2: Nagma Dynasty
Option 3: Soma Dynasty
Option 4: Tuluva Dynasty
Correct Answer: Sangama Dynasty
Solution : The correct answer is Sangama Dynasty.
The brothers Harihara I and Bukka Raya I of the Sangama Dynasty, who belonged to a pastoralist shepherd group of Kuruba Gowda origin, formed the Vijayanagara Empire in 1336. The empire gained notoriety towards the end of
Question : Find the incorrect match among the
Option 1: Sir Syed Murtza Khan - Aligarh Muslim University
Option 2: Dr. B.R. Ambedkar - Ambedkar University
Option 3: Pt. Jawaharlal Nehru - Jawaharlal Nehru University
Option 4: Madan Mohan Malviya - Banaras Hindu University
Correct Answer: Sir Syed Murtza Khan - Aligarh Muslim University
Solution : The Correct Answer is Sir Syed Murtza Khan - Aligarh Muslim University
He was one of the original thinkers to recognize the critical role that education plays in the empowerment of the underprivileged and backward Muslim community. The
Question : In which form is the supplied heat energy stored during change in temperature of substance?
Option 1: Heat energy
Option 2: Kinetic energy
Option 3: Potential energy
Option 4: Both kinetic and potential energy
Correct Answer: Kinetic energy
Solution : The correct option is kinetic energy.
The provided heat energy is mostly stored in the form of kinetic energy of the particles inside the material during a change in temperature. The increased motion and vibration of the atoms and molecules as they absorb heat
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