Staff Selection Commission Sub Inspector Exam
Question : Supersonic jets cause thinning of which layer?
Option 1: O2 layer
Option 2: O3 layer
Option 3: CO2 layer
Option 4: SO2 layer
Correct Answer: O3 layer
Solution : The correct option is the O3 layer.
The O3 layer gets thin as a result of supersonic planes, particularly those operating in the stratosphere. This is caused by nitrogen oxides that are released from supersonic aircraft engines. These nitrogen oxides
Question : Comprehension: Read the given passage carefully and answer the questions that follow.
The world of social media is a strange and wondrous place. It's a world where you can connect with people from all over the globe, share your thoughts and opinions, and maybe even go viral if you're lucky. But let's be real, it's also a world filled with endless cat videos, oversharing, and drama. One of the most interesting things about social media is the way it's changed the way we communicate. We've gone from long, thoughtful emails to quick, abbreviated messages with emojis and acronyms. And don't even get me started on the whole hashtag phenomenon. It's like we're all speaking a different language now. But there are also some downsides to this constant connection. It's easy to get sucked into the world of social media and forget about the real world around us. We're so busy scrolling through our feeds that we forget to enjoy the little moments in life. And let's not forget about the pressure to present the perfect life online. It's like we're all in a competition to see who can be the most popular, the most successful, the most enviable. Despite all of this, I have to admit, I'm still a fan of social media. It's a great way to stay connected with friends and family, and I've even made some new friends through various online communities. Plus, let's face it, sometimes you just need a good laugh at a ridiculous meme. Question: Which of the following is NOT mentioned as a way social media has changed the way we communicate?
Option 1: Quick, abbreviated messages with emojis and acronyms.
Option 2: Video conferencing for more meaningful conversations.
Option 3: Connecting with people from all over the world.
Option 4: The use of hashtags.
Correct Answer: Video conferencing for more meaningful conversations.
Solution : The correct choice is the second option.
Explanation: In the passage, the mention of changes in communication on social media focuses on the shift from long, thoughtful emails to quick, abbreviated messages with emojis and acronyms, as well
Question : Mohiniyattam belongs to which of the following states?
Option 1: Jharkhand
Option 2: Chhattisgarh
Option 3: Karnataka
Option 4: Kerala
Correct Answer: Kerala
Solution : The correct answer is Kerala.
Mohiniyattam is one of the 8 Indian classical dance forms and one of the two classical dance forms that originated in Kerala. It has two native classical dance forms Mohiniyattam and Kathakali. The other classical dance forms of India
Question : Which of the following rock formations resulted in the Eastern Ghats?
Option 1: Charnockites, bauxite, granite gneiss and quartzite rock
Option 2: Khondalites, bauxite, granite gneiss, metamorphic gneisses and quartzite rock
Option 3: Charnockites, Khondalites, metamorphic gneisses and quartzite rock
Option 4: Charnockites, granite gneiss, quartzite rock, khondalites and metamorphic gneisses
Correct Answer: Charnockites, granite gneiss, quartzite rock, khondalites and metamorphic gneisses
Solution : The correct answer is charnockites, granite gneiss, quartzite rock, khondalites and metamorphic gneisses.
Among the rock formations listed, Charnockites, granite gneiss, khondalites, and metamorphic gneisses are significant contributors to the formation of the Eastern Ghats. Quartzite rock
Question : If $\alpha$ is an acute angle and $2\sin \alpha+15\cos^2\alpha=7$, then the value of $\cot \alpha$ is:
Option 1: $\frac{4}{3}$
Option 2: $\frac{4}{5}$
Option 3: $\frac{5}{4}$
Option 4: $\frac{3}{4}$
Correct Answer: $\frac{3}{4}$
Solution : Given: If $\alpha$ is an acute angle and $2\sin \alpha+15\cos^2 \alpha=7$. $2\sin \alpha+15\cos^2\alpha=7$ ⇒ $2\sin \alpha+15(1–\sin^2 \alpha)=7$ Let $\sin \alpha$ be $x$. ⇒ $2x+15(1–x^2)=7$ ⇒ $2x+15–15x^2=7$ ⇒ $15x^2–2x–8=0$ ⇒ $15x^2–12x+10x–8=0$ ⇒ $3x(5x–4)+2(5x–4)=0$ ⇒ $(5x–4)(3x+2)=0$ ⇒ $x=\frac{4}{5},\frac{–2}{3}$ $\sin \alpha=\frac{4}{5},\frac{–2}{3}$ Since $\alpha$ is an acute angle, the
Question : Which International organisation observed the 125th birth anniversary of Shri B. R. Ambedkar?
Option 1: International Monetary Fund (IMF)
Option 2: United Nations
Option 3: Asian Development Bank
Option 4: World Bank
Correct Answer: United Nations
Solution : The correct answer is the United Nations
United Nations observed the 125th birth anniversary of Bharat Ratna awardee B. R. Ambedkar on 13th April 2016. This observance mainly focused on combating inequalities to achieve Sustainable Development Goals (SDGs). The 125th birth anniversary of Dr
Question : Directions: If + means –, – means ×, × means ÷, and ÷ means +, then what will be the value of the following expression? 13 – 3 + 15 × 3 ÷ 5 = ?
Option 1: 37
Option 2: 42
Option 3: 39
Option 4: 41
Correct Answer: 39
Solution : Given: + means –, – means ×, × means ÷, and ÷ means + 13 – 3 + 15 × 3 ÷ 5 = ?
After interchanging the given mathematical signs, we get – 13 × 3 – 15 ÷ 3 + 5 13 ×
Question : If $\sin \theta+\cos \theta=\frac{\sqrt{11}}{3}$, then the value of $(\cos \theta-\sin \theta)$ is:
Option 1: $\frac{\sqrt{5}}{3}$
Option 2: $\frac{7}{3}$
Option 3: $\frac{5}{3}$
Option 4: $\frac{\sqrt{7}}{3}$
Correct Answer: $\frac{\sqrt{7}}{3}$
Solution : $\sin \theta+\cos \theta=\frac{\sqrt{11}}{3}$ Squaring, $(\sin \theta+\cos \theta)^2=(\frac{\sqrt{11}}{3})^2$ ⇒ $\sin^2 \theta + \cos^2 \theta + 2\sin \theta \cos \theta = \frac{11}{9}$ ⇒ $1+2\sin \theta \cos \theta = \frac{11}{9}$ ⇒ $2\sin \theta \cos \theta = \frac{11-9}{9}$ ⇒ $2\sin \theta \cos \theta = \frac{2}{9}$ -----------(1) $(\cos \theta-\sin \theta)^2$
Question : Which of the following is a vestigial organ in the human body?
Option 1: Tailbone
Option 2: Spleen
Option 3: Thyroid
Option 4: Gall bladder
Correct Answer: Tailbone
Solution : The correct option is Tailbone.
The tailbone (coccyx) is a vestigial organ present in humans. They may have served a purpose in previous species, but due to changes in the organism's environment or behaviour, they have shrunk in size, and function over time. Human examples
Question : In a volleyball game, each team comprise how many players?
Option 1: 5
Option 2: 6
Option 3: 8
Option 4: 7
Correct Answer: 6
Solution : The correct answer is 6.
A volleyball team consists of six players on the court simultaneously. Following a team's regaining of service, players must rotate one position clockwise. The three players positioned at the net are allowed to jump, spike, or block near the
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