Correct Answer: 6 hours

Solution : The speed of the stream is 4 km/hr.
The speed of the boat is 11 km/hr.
Upstream Speed = Speed of boat –Speed of stream
= 11 – 4 = 7 km/h
Upstream distance = 21 km
Time = $\frac{21}{7}$ = 3 hrs
Downstream Speed = Speed of boat + Speed of stream
= 11 + 4 = 15 km/h
Downstream distance = 45 km
Time = $\frac{45}{15}$ = 3 hrs
Total time = 3 + 3 = 6 hrs
Hence, the correct answer is 6 hours.

Correct Answer: 72

Solution : The total sum of marks was initially = 71 × 17 = 1207
The wrongly entered marks are 65 and 24, so subtract these from the total = 1207 – 65 – 24 = 1118
The correct marks are 56 and 50, so add these to the total = 1118 + 56 + 50 = 1224
Correct average = $\frac{\text{Total correct sum}}{{\text{Number of students}}}=\frac{1224}{17} = 72$
Hence, the correct answer is 72.

Correct Answer: KMP

Solution : Let's check the options –
First option: RTV; R + 2 = T; T + 2 = V
Second option: HJL; H + 2 = J; J + 2 = L
Third option: KMP; K + 2 = M; M + 3 = P
Fourth option: BDF; B + 2 = D; D + 2 = F

The third option does not fit the pattern. Hence, the third option is correct.

Correct Answer: To maximise the focus on rehabilitation without really caring about resettlement

Solution : The correct answer is to maximise the focus on rehabilitation without really caring about resettlement.

The National Rehabilitation and Resettlement Policy, 2007 provides for compensation to people whose land is acquired or any other involuntary displacement. The scheme has been formulated by the Ministry of Rural Development and the Department of Land Resources. 

Correct Answer: A website was built from scratch by him.

Solution : The correct choice is the second option.

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 the subject in the passive voice.

The structure of the passive voice in the case of the simple past tense is: "Singular object + was + past participle of the main verb + by followed by the agent of the action."

Therefore, the correct answer is: A website was built from scratch by him.

Correct Answer: (2)

Solution : The sentence can be improved using the second option.

To should replace in in the sentence as the correct preposition. Here, the reference is in the past to know whether the person has visited the city before; so, to is used to indicate the destination or place the person has visited.

Therefore, the correct sentence should be: "Have you ever been to New York?"

Correct Answer: EUOT

Solution : Given:
GAMU is related to JDPX and LHTC is related to OKWF.

Add 3 to the place value of the letters of GAMU and LHTC to obtain their required codes –
GAMU→G + 3 = J; A + 3 = D; M + 3 = P; U + 3 = X
Thus, GAMU is related to JDPX.
LHTC→L + 3 = O; H + 3 = K; T + 3 = W; C + 3 = F
Thus, LHTC is related to OKWF.
Similarly, follow the same pattern for BRLQ –
B + 3 = E; R + 3 = U; L + 3 = O; Q + 3 = T

Thus, BRLQ is related to EUOT. Hence, the first option is correct.

Correct Answer: Sardar Vallabhbhai Patel

Solution : The correct option is Sardar Vallabhbhai Patel.

Vallabhbhai Patel is often referred to as the "Bismarck of India." This comparison is due to his role in unifying the numerous princely states after India gained independence in 1947. Patel played a crucial role in the integration of these states into the newly formed Union of India. The title "Bismarck of India" draws a parallel between Patel and Otto von Bismarck, the statesman who played a significant role in the unification of Germany in the 19th century.

Correct Answer: Bhangra

Solution : The correct answer is Bhangra.

It is a traditional folk dance that originated in the Punjab region of India. Bhangra is not a classical dance form. It is the most famous folk dance form in Punjab. The Indian classical dance forms are Bharatanatyam, Kuchipudi, Kathakali, Kathak, Odissi, Manipuri, Mohiniyattam, and Sattriya.

Correct Answer: Kiran Bedi

Solution : The correct answer is Kiran Bedi.

Kiran Bedi began her career as an ASP (Assistant Superintendent of Police) in Chanakyapuri, Delhi, becoming the country's first IPS officer. After joining the IPS services, she served in various roles, including antiterrorist specialist, narcotics officer, and administrator. She received the President's Gold Medal and the Ramon Magsaysay Award in 1979 for her outstanding work using a contemporary strategy.