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Question : A boy goes from home to school at a speed of 30 km/hr and returns back at a speed of 70 km/hr. What is his average speed for the journey?
Option 1: 42 km/hr
Option 2: 48 km/hr
Option 3: 38 km/hr
Option 4: 36 km/hr
Correct Answer: 42 km/hr
Solution : Given: Going speed = 30 km/hr Returning speed = 70 km/hr We know that, $\text{Average speed} =\frac{2S_1S_2}{S_1+S_2}=\frac{2×30×70}{30+70}=42$ km/hr Hence, the correct answer is 42 km/hr.
Question : Directions: A statement is given followed by two inferences I and II. You have to consider the statement to be true even if it seems to be at variance with commonly known facts. You have to decide which of the given inferences, if any, follow from the given statement. Statement: Extensive use of pesticides in agricultural production contaminates soil and water, remains in the crops, and finally enters the food chain, thereby posing a threat to human beings. Inferences: I. Excessive use of pesticides in agricultural production is not good for people. II. Excessive use of pesticides in agricultural production can have a bad effect on water.
Option 1: If only II follows
Option 2: If neither I nor II follows
Option 3: If only I follows
Option 4: If both I and II follow
Correct Answer: If both I and II follow
Solution : Given: Statement: Extensive use of pesticides in agricultural production contaminates soil and water, remains in the crops, and finally enters the food chain, thereby posing a threat to human beings.
Inferences: I. Excessive use of pesticides in agricultural production is
Question : The value of 97 × 103 is _________.
Option 1: 7999
Option 2: 9991
Option 3: 8991
Option 4: 9981
Correct Answer: 9991
Solution : 97 × 103 = (100 - 3) × (100 + 3) = 1002 - 32 = 10000 - 9 = 9991 Hence, the correct answer is 9991.
Question : Evaluate the following: $\cos \left(36^{\circ}+A\right) \cdot \cos \left(36^{\circ}-A\right)+\cos \left(54^{\circ}+A\right) \cdot \cos \left(54^{\circ}-A\right)$
Option 1: $\sin 2A$
Option 2: $\cos A$
Option 3: $\sin A$
Option 4: $\cos 2A$
Correct Answer: $\cos 2A$
Solution : $\cos (36^{\circ}+A). \cos (36^{\circ}-A)+\cos (54^{\circ}+A) .\cos (54^{\circ}-A)$ = $\cos (36^{\circ}+A) . \cos (36^{\circ}-A)+\sin [90^{\circ}-(54^{\circ}+A)] . \sin [90^{\circ}-(54^{\circ}-A )]$ = $\cos (36^{\circ}+A) \cdot \cos (36^{\circ}-A)+\sin (36^{\circ}-A) \cdot \sin (36^{\circ}+A)$ = $\cos (36^{\circ}+A-36^{\circ}+A )$ [$\because \cos(A- B) =\sin A.\sin B +\cos A. \cos B$] = $\cos
Question : Directions: Select the correct mirror image of the given combination when the mirror is placed at PQ as shown below.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection. So, according to the above property and the information provided, the mirror is placed on the right side of the figure (on line PQ). So, the left side of the
Question : Which country celebrates one of the famous festivals known as Paro Tschechu?
Option 1: Japan
Option 2: Bhutan
Option 3: Thailand
Option 4: Burma
Correct Answer: Bhutan
Solution : The correct option is Bhutan.
Bhutan observes Paro Tschechu, a well-known celebration. Including mask dances, traditional music, and religious procedures, Paro Tschechu is one of Bhutan's most significant and colourful religious celebrations. In Bhutan, it is a major religious and cultural event that is frequently
Question : Directions: Select the option figure in which the given figure is embedded (rotation is NOT allowed).
Solution : Since the rotation of the figure is not allowed, we will check where the question figure can exactly fit itself in the given option figures.
From the above, it is clear that the given question figure is embedded in the first option figure. Hence, the first
Question : Select the option that expresses the given sentence in passive voice.
Do not touch any items displayed on glass shelves.
Option 1: Let any items displayed on glass shelves be touched.
Option 2: No items displayed on glass shelves should be touched.
Option 3: Any items displayed on glass shelves will not be touched.
Option 4: Any items displayed on glass shelves not be touched.
Correct Answer: No items displayed on glass shelves should be touched.
Solution : The correct structure is the second option.
Explanation: Passive voice is the voice in which the object experiences an action rather than the person who performs the action. Hence, the object in the active sentence becomes
Question : Genes are not found in pairs
Option 1: in body cells
Option 2: in the ovary after fertilisation
Option 3: in gametes
Option 4: in zygotes
Correct Answer: in gametes
Solution : The correct option is in gametes.
Genes are not found in pairs in gametes. The specialised reproductive cells known as gametes, which include sperm, and egg cells, are haploid, meaning they have half as many chromosomes as the organism's diploid somatic (body) cells. The
Question : The vote of the Speaker of Lok Sabha is called _______.
Option 1: Casting vote
Option 2: Sound vote
Option 3: Direct vote
Option 4: Indirect vote
Correct Answer: Casting vote
Solution : The correct option is Casting a vote.
In the event of a tie vote on both sides, the Chairman or Speaker of Lok Sabha may cast a vote to break the impasse. "Casting vote" or "Speaker's vote" are two terms used to describe
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