Showing 11–20 of 71 questions
If 15 workers can complete a project in 20 days, in how many days can 25 workers complete the same project?
A
10 days
B
12 days
C
15 days
D
18 days
Correct Answer:
B. 12 days
EXPLANATION
Work is constant. 15 × 20 = 25 × x, so x = 300/25 = 12 days
If the compound interest on ₹1,000 at 10% p.a. for 2 years is ₹210, what would be the simple interest for the same principal, rate, and time?
A
₹200
B
₹220
C
₹240
D
₹180
EXPLANATION
Simple Interest = (P × R × T) / 100 = (1000 × 10 × 2) / 100 = ₹200
How many Lok Sabha seats are reserved for Scheduled Tribes in India?
EXPLANATION
Out of 545 Lok Sabha seats, 84 are reserved for Scheduled Tribes and 131 for Scheduled Castes.
What is the maximum number of articles that can be added to the Constitution of India without an amendment?
A
10
B
5
C
There is no maximum limit
D
Unlimited through ordinary legislation
Correct Answer:
C. There is no maximum limit
EXPLANATION
Articles can be added to the Constitution through amendments with proper procedure, with no predetermined maximum limit.
In 2024, who became the youngest person to win the Nobel Prize in Physics?
A
Demis Hassabis
B
John Jumper
C
Geoffrey Hinton
D
Yann LeCun
Correct Answer:
B. John Jumper
EXPLANATION
John Jumper and Demis Hassabis won the 2024 Nobel Prize in Physics for machine learning applications in protein folding.
The concept of 'Zero' was invented by which ancient Indian mathematician?
A
Aryabhata
B
Bhaskara II
C
Brahmagupta
D
Varahamihira
Correct Answer:
C. Brahmagupta
EXPLANATION
Brahmagupta (598-668 CE) is credited with introducing the concept of zero as a number in mathematics.
A number is such that when divided by 5, 6, and 7 leaves remainder 1 in each case. What is the smallest such number greater than 100?
EXPLANATION
LCM(5,6,7) = 210. The number is of form 210k + 1. For k=1, number = 211.
The Chandrayaan-3 mission successfully landed on which region of the Moon?
A
Lunar North Pole
B
Lunar South Pole
C
Lunar Equator
D
Lunar Far Side
Correct Answer:
B. Lunar South Pole
EXPLANATION
Chandrayaan-3 successfully landed near the Lunar South Pole on August 23, 2023.
Which of the following is NOT a member of the BRICS organization?
A
Vietnam
B
South Africa
C
Brazil
D
Russia
Correct Answer:
A. Vietnam
EXPLANATION
BRICS consists of Brazil, Russia, India, China, and South Africa. Vietnam is not a member.
If the cost price of 12 articles is equal to the selling price of 10 articles, what is the profit percentage?
EXPLANATION
Let CP = x per article. 12x = 10 × SP. So SP = 1.2x. Profit = 1.2x - x = 0.2x = 20%
