Staff Selection Commission Combined Graduate Level Exam
Question : Glycol is added to aviation gasoline because it
Option 1: reduces evaporation of petrol
Option 2: increases efficiency of petrol
Option 3: prevents freezing of petrol
Option 4: reduces consumption of petrol
Correct Answer: prevents freezing of petrol
Solution : The correct answer is prevents freezing of petrol.
Glycol is added to aviation petrol to prevent the fuel from freezing. Aviation petrol is a kind of fuel used in aeroplanes. It is critical for aviation petrol to have a low freezing point
Question : What was invented by Zacharias Jansen?
Option 1: Jet engine
Option 2: Radium
Option 3: Microscope
Option 4: Electric lamp
Correct Answer: Microscope
Solution : The correct option is Microscope.
Zacharias Janssen, a Dutch eyeglass maker, is credited with creating one of the first compound microscopes. The early microscopes had a 20–30 fold or greater magnification power. It was developed around 1600s. Usually, convex lenses are used in microscopes to
Question : Select the most appropriate meaning of the given idiom. To read between the lines
Option 1: To criticise the writer's style
Option 2: To interrupt someone while reading
Option 3: To read each line carefully
Option 4: To understand the implied meaning
Correct Answer: To understand the implied meaning
Solution : The fourth option is the correct answer.
Reading between the lines refers to the act of discerning or grasping a meaning that is not explicitly stated or expressed. It involves understanding the implied or hidden message, often conveyed through subtle nuances
Question : Who is the Chief Law Officer of the Government of India ?
Option 1: The chief Justice of India
Option 2: The Registrar of the Supreme court
Option 3: The Law minister of India
Option 4: the Attorney general of India
Correct Answer: the Attorney general of India
Solution : Correct Answer is the Attorney general of India
The Chief Legal Advisor of the Government of India ,provides legal advice to the Union Government on all matters of law and order. This is a function of the Union Executive as per
Question : The National Highway 1A connects Leh to Kashmir Valley through the_________Pass.
Option 1: Khyber
Option 2: Zoji La
Option 3: Nathula
Option 4: Karakoram
Correct Answer: Zoji La
Solution : The correct option is Zoji La.
National Highway 1A traverses the Zoji La Pass, linking Leh with the Kashmir Valley. The numbering of national highways follows a directional pattern, with odd numbers for east-to-west highways and even numbers for north-to-south routes.
Question : Select the most appropriate ANTONYM of the given word.
ABOMINABLE
Option 1: Delightful
Option 2: Hateful
Option 3: Colourful
Option 4: Distasteful
Correct Answer: Delightful
Solution : The correct choice is the first option.
Abominable is synonymous with something detestable or unpleasant. Delightful signifies something that is extremely pleasing or enjoyable, making it the correct antonym.
The meanings of the other options are as follows:
Question : Directions: Select the correct mirror image of the given figure when the mirror is placed at AB as shown below.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : As per the mirror image properties, closer things appear close to the mirror in the reflection. Here, according to the information provided, the mirror is placed on the right side of the figure (on line AB). So, the left side of the reflected image will appear
Question : If $\sec 2 \theta=\operatorname{cosec}(\theta-36°)$, where $2 \theta$ is an acute angle, find the value of $\theta$.
Option 1: 32°
Option 2: 46°
Option 3: 20°
Option 4: 42°
Correct Answer: 42°
Solution : Given, $\sec 2 \theta=\operatorname{cosec}\left(\theta-36° \right)$ We know, $ \operatorname{cosec}\theta = \operatorname{sec}(90°-\theta)$ ⇒ $\sec2\theta = \sec\{90°-(\theta-36°)\}$ ⇒ $\sec2\theta=\sec(90°-\theta+36°)$ ⇒ $2\theta=126°-\theta$ ⇒ $3\theta=126°$ ⇒ $\theta=\frac{126°}{3}=42°$ Hence, the correct answer is 42°.
Question : Select the correct indirect form of the given sentence. She said, “She must leave all the bad habits.”
Option 1: She said she has to leave all the bad habits
Option 2: She said that she must have leave all the bad habits
Option 3: She said that she had to leave all the bad habits.
Option 4: She said that she could leave all the bad habits
Correct Answer: She said that she had to leave all the bad habits.
Solution : The correct choice is the third option.
In this case:
The reporting verb "said" remains unchanged. The pronoun "she" is retained but shifted from the first person to the third person. The verb "must" changes
Question : Directions: Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term. 21 : 196 :: 29 : ? :: 38 : 315
Option 1: 319
Option 2: 252
Option 3: 203
Option 4: 841
Correct Answer: 252
Solution : Given: 21 : 196 :: 29 : ? :: 38 : 315
Here, multiply the first number by 7 and then add the square of 7 to the resultant. 21 : 196→(21 × 7) + (7)2 = 147 + 49 = 196 38 :
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