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Question : Simplify the following expression: $\frac{\left(a^2+b^2-c^2\right)^2-\left(a^2-b^2+c^2\right)^2}{b^2-c^2}$
Option 1: $3a^2$
Option 2: $4a^2$
Option 3: $5a^2$
Option 4: $2a^2$
Correct Answer: $4a^2$
Solution : Given: $\frac{(a^2+b^2-c^2)^2-(a^2-b^2+c^2)^2}{b^2-c^2}$ $= \frac{(a^2+b^2-c^2+a^2-b^2+c^2)(a^2+b^2-c^2-a^2+b^2-c^2)}{b^2-c^2}$ $= \frac{(2a^2)(2b^2-2c^2)}{b^2-c^2}$ $= \frac{4a^2(b^2-c^2)}{b^2-c^2}$ $= 4a^2$ Hence, the correct answer is $4a^2$.
Question : Who became the first woman soldier in the Indian Army to have skydived from 10,000 feet?
Option 1: Lieutenant General Madhuri Kanitkar
Option 2: Lance Naik Manju
Option 3: Lieutenant General Rajshree Ramasethu
Option 4: Air Marshal Arti Sarin
Correct Answer: Lance Naik Manju
Solution : The correct answer is Lance Naik Manju.
Lance Naik Manju, a member of the Indian Army's Army Service Corps stationed in Bengaluru, made history in 2019 as the first female soldier-skydiver to successfully parachute from a height of 10,000 feet. This remarkable achievement
Question : A 1000-metre-long train is running at the speed of 72 km/hr. If it crosses a bridge in 85 seconds, then what is the length of the bridge?
Option 1: 800 metres
Option 2: 700 metres
Option 3: 950 metres
Option 4: 750 metres
Correct Answer: 700 metres
Solution : A 1000-metre-long train is running at the speed of 72 km/hr. In 85 seconds it crosses a bridge. In 85 seconds the train travels = $\frac{72000}{3600}×85=1700$ metres When the train crosses a bridge, the distance covered by the train is the sum of the
Question : Directions: Select the figure that will replace the question mark (?) in the following figure series.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : In the given figure, the following pattern is being followed – 1. In each alternative box that is in box 2 and box 4 a new letter or number is introduced in the centre of the box. 2. The element U changed its position from right
Question : Orders and other instruments made and executed in the name of the President are to be authenticated:
Option 1: The Minister concerned
Option 2: By the President
Option 3: In such manner as may be specified in rules made by the President
Option 4: The Prime Minister
Correct Answer: In such manner as may be specified in rules made by the President
Solution : The correct answer is In such manner as may be specified in rules made by the President.
Orders and other instruments crafted and executed in the name of the President of India
Question : Parts of the following sentence have been given as options. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.
She is brave than any other girl in the office.
Option 1: She is brave
Option 2: in the office
Option 3: No error
Option 4: than any other girl
Correct Answer: She is brave
Solution : The correct choice is the first option.
Brave should be replaced with braver, as it is the correct comparative form to be used because it helps compare the girl with other girls who were in the office and convey that she
Question : Cloud burst means
Option 1: formation of artificial rain
Option 2: abnormally heavy downpours of rain, associated with thunderstorms
Option 3: presence of scattered flakes of clouds in the sky
Option 4: sowing of seeds of a crop in a cloudy weather
Correct Answer: abnormally heavy downpours of rain, associated with thunderstorms
Solution : The correct answer is abnormally heavy downpours of rain, associated with thunderstorms.
Cloudburst is an extreme weather phenomenon in which abnormally high rainfall is witnessed over a short period. It is often associated with hail and thunderstorms. Usually,
Question : Directions: If the age of Rahul is 5 years more than his friend Ajay's age, the age of Rahul's wife is 6 years less than Rahul's, and Ajay's wife is 1 year older than Rahul's wife, then which of the following statements is true?
Option 1: Rahul's age and Ajay's wife's age are the same
Option 2: Ajay's wife's age and Ajay's age are the same
Option 3: Rahul and Ajay are of the same age
Option 4: Rahul's and Ajay's age difference is 3 years
Correct Answer: Ajay's wife's age and Ajay's age are the same
Solution : Given: Let Ajay's age be x years. Rahul's age = x + 5 years Rahul's wife's age = x + 5 – 6 = x – 1 years Ajay's wife's age = x – 1 + 1
Question : __________ was the first governor-general of Bengal.
Option 1: Warren Hastings
Option 2: William Bentinck
Option 3: Charles Metcalfe
Option 4: John Shore
Correct Answer: Warren Hastings
Solution : The correct answer is Warren Hastings.
Warren Hastings was the first governor-general of Bengal from 1773 to 1785. He became the governor-general of Bengal by the Regulating Act of 1773, which brought the presidencies of Madras and Bombay under Bengal’s control.
Question : If $\sec A=\frac{5}{4}$, then the value of $\frac{\tan A}{1+\tan ^2 A}-\frac{\sin A}{\sec A}$ is:
Option 1: 2
Option 2: 1
Option 3: 0
Option 4: 3
Correct Answer: 0
Solution : $\sec A=\frac{5}{4}$ $\cos A = \frac{1}{\sec A} = \frac{4}{5}$ $\sin A = \sqrt{1-\cos^2A}=\sqrt{1-(\frac{4}{5})^2}=\frac{3}{5}$ $\tan A = \frac{\sin A}{\cos A}=\frac{3}{4}$ $\therefore$ $\frac{\tan A}{1+\tan ^2 A}-\frac{\sin A}{\sec A}$ $= \frac{\frac{3}{4}}{1+(\frac{3}{4})^2}-\frac{\frac{3}{5}}{\frac{5}{4}}$ $= \frac{3\times 4}{16+9}-\frac{3\times4}{5\times 5}$ $=\frac{12}{25}-\frac{12}{25}$ $=0$ Hence, the correct answer is 0.
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