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Question : Select the most appropriate one-word substitution for the given group of words.
Study of environment
Option 1: pathology
Option 2: ecology
Option 3: cosmology
Option 4: radiology
Correct Answer: ecology
Solution : The correct answer is the second option.
Explanation: In the given group of words, study of the environment, the term that directly pertains to this field of study is ecology. Ecology is the scientific study of the relationships between living organisms and their
Question : Which is the sensory receptor involved in detecting blood pressure?
Option 1: Chemoreceptor
Option 2: Mechanoreceptor
Option 3: Photoreceptor
Option 4: Magnetoreceptor
Correct Answer: Mechanoreceptor
Solution : The correct option is Mechanoreceptor.
"Mechanoreceptors" are the sensory receptors that detect blood pressure. The mechanoreceptors, known as "baroreceptors", are specialised sensory nerve endings found in blood vessels, notably the carotid arteries (located in the neck), and the aortic arch (placed near the heart). These
Question : Directions: Amit ranked 7th from the top and 26th from the bottom in his class. How many students are there in the class?
Option 1: 31
Option 2: 33
Option 3: 27
Option 4: 32
Correct Answer: 32
Solution : Given: Amit ranked 7th from the top and 26th from the bottom in his class.
Total number of students in the class = (Position from top) + (Position from bottom) – 1 = 7 + 26 – 1 = 32
Therefore, 32 students are in
Question : The area of the base of a rectangular tank is 70 m2 and the volume of water contained in it is 2800 m3. What is the depth of the water?
Option 1: 30 m
Option 2: 40 m
Option 3: 50 m
Option 4: 60 m
Correct Answer: 40 m
Solution : Given: Volume = 2800 m3 Area of base = 70 m2 The volume of the Rectangular tank = Area of base × Height Putting the values, we get: 2800 = 70 × Height ⇒ Height = $\frac{2800}{70}$ = 40 Hence, the correct
Question : Two pipes can fill a tank in 15 hours and 4 hours, respectively, while a third pipe can empty it in 12 hours. How long (in hours) will it take to fill the empty tank if all three pipes are opened simultaneously?
Option 1: $\frac{50}{7}$
Option 2: $\frac{15}{7}$
Option 3: $\frac{30}{7}$
Option 4: $\frac{20}{7}$
Correct Answer: $\frac{30}{7}$
Solution : Time to fill the tank by two pipes = 15 hours and 4 hours Time to empty the tank by third pipe = 12 hours Efficiency =$\frac{ \text{Total work}}{\text{Total time}}$ Let the total capacity of the tank be LCM of 15, 4, and 12 i.e.
Question : In $\triangle \mathrm{ABC}, \overline{\mathrm{BD}} \perp \overline{\mathrm{AC}}$, intersecting $\overline{\mathrm{AC}}$ at $\mathrm{D}$. Also, $\mathrm{BD}=12 \mathrm{~cm}$. If $\mathrm{m}(\overline{\mathrm{AD}})=6 \mathrm{~cm}$ and $\mathrm{m}(\overline{\mathrm{CD}})=4 \mathrm{~cm}$, find the area $\left(\right.$in $\left.\mathrm{cm}^2\right)$ of $\triangle \mathrm{ABC}$.
Option 1: 45
Option 2: 50
Option 3: 60
Option 4: 75
Correct Answer: 60
Solution : Given, $\overline{\mathrm{BD}} \perp \overline{\mathrm{AC}}$ $\mathrm{BD}=12 \mathrm{~cm}$, $\mathrm{m}(\overline{\mathrm{AD}})=6 \mathrm{~cm}$ and $\mathrm{m}(\overline{\mathrm{CD}})=4 \mathrm{~cm}$ $AC = AD + CD = 10$ cm Area of $\Delta ABC$ = $\frac{1}{2}\times \text{base}\times \text{height}$ = $\frac{1}{2}\times AC\times BD$ = $\frac{1}{2}\times (6+4)\times 12$ = $60$ cm2 Hence, the correct answer is 60.
Question : Directions: Consider the statements to be true and decide which of the given conclusions/assumptions can be drawn from the given statements. Statements: When water is cooled, it turns into ice. When water is heated, it turns into steam. Conclusions: I. Water is a solid. II. Water is a gas.
Option 1: Only conclusion I follows
Option 2: Only conclusion II follows
Option 3: Both conclusions I and II follow
Option 4: Neither conclusion I nor II follows
Correct Answer: Neither conclusion I nor II follows
Solution : Conclusion I: Water is a solid. The given statements do not state that water is a solid. It states that when water is cooled, turns into ice. The statement mentions the formation and not what it is. Conclusion II: Water
Question : Who was the Governor General of Bengal when the Permanent Settlement was introduced there in 1793?
Option 1: Charles Cornwallis
Option 2: Lord William Bentinck
Option 3: Lord Mountbatten
Option 4: Lord Ripon
Correct Answer: Charles Cornwallis
Solution : The correct option is Charles Cornwallis.
The Permanent Settlement in Bengal was introduced in 1793 during the governorship of Lord Cornwallis. Lord Cornwallis was the Governor General of Bengal from 1786 to 1793. The Permanent Settlement, also known as the Cornwallis Code, aimed to
Question : Select the most appropriate ANTONYM of the underlined word in the given sentence.
The thief was caught with a spurious Picasso painting.
Option 1: Fake
Option 2: Stolen
Option 3: Splendid
Option 4: Authentic
Correct Answer: Authentic
Solution : The correct choice is the fourth option.
Authentic means real, genuine, or true. It contrasts with the deceptive nature of something that is spurious.
The meanings of the other options are as follows:
Fake: It is a synonym for "spurious" rather than an antonym. Both
Question : Directions: Kanna is taller than Malik. Dev is shorter than Krish whereas Krish is taller than Malik. Veena is shorter than Krish but taller than Malik and Dev is taller than Veena. Who is the shortest?
Option 1: Dev
Option 2: Kanna
Option 3: Veena
Option 4: Malik
Correct Answer: Malik
Solution : Given: (i) Kanna is taller than Malik. Kanna > Malik (ii) Dev is shorter than Krish whereas Krish is taller than Malik. Krish > Dev and Krish > Malik (iii) Veena is shorter than Krish but taller than Malik. Krish > Veena > Malik (iv)
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