Practise UPSC MCQs with explanations

A person climbs a hill in a straight path from a point O on the ground in the North-East direction and reaches point A after covering 5 km. Then from A he goes in the North-West direction to reach point B; distance AB is 12 km. Now how far is the person from the starting point O?

In a question paper, there are five questions to be attempted and answer to each question has two choices — True (T) or False (F). It is given that no two examinees have given the answers to the five questions in an identical sequence. For this to happen, the maximum number of examinees is:

Two numbers X and Y are respectively 20% and 28% less than a third number Z. By what percentage is the number Y less than the number X?

The monthly average salary paid to all the employees of a company was Rs. 5000. The monthly average salary paid to male and female employees was Rs. 5200 and Rs. 4200 respectively. Then the percentage of males employed in the company is:

Consider the following statements: 1. Either A and B are of the same age or A is older than B. 2. Either C and D are of the same age or D is older than C. 3. B is older than C. Which of the following conclusions can be drawn from the above statements?

In a class, there are 18 very tall boys. If these constitute three-fourths of the boys and the total number of boys is two-thirds of the total number of students in the class, what is the number of girls in the class?

Anita's mathematics test had 70 problems carrying equal marks, i.e., 10 arithmetic, 30 algebra and 30 geometry. Although she answered 70% of the arithmetic, 40% of the algebra and 60% of the geometry problems correctly, she did not pass the test because she got less than 60% marks. The number of more questions she would have to answer correctly to earn a 60% passing mark is:

In aid of charity, every student in a class contributes as many rupees as the number of students in that class. With the additional contribution of Rs. 2 by one student only, the total collection is Rs. 443. Then how many students are there in the class?

30 g of sugar was mixed in 180 ml water in vessel A, 40 g of sugar was mixed in 280 ml of water in vessel B and 20 g of sugar was mixed in 100 ml of water in vessel C. The solution in vessel B is:

A class starts at 11:00 am and lasts till 2:27 pm. Four periods of equal duration are held during this interval. After every period, a rest of 5 minutes is given to the students. The exact duration of each period is:

X and Y are natural numbers other than 1, and Y is greater than X. Which of the following represents the largest number?

If X is between −3 and −1, and Y is between −1 and 1, then X² − Y² is in between which of the following?

If RAMON is written as 12345 and DINESH as 675849, then HAMAM will be written as

If LSJXVC is the code for MUMBAI, the code for DELHI is

A train 200 metres long is moving at the rate of 40 kmph. In how many seconds will it cross a man standing near the railway line?

How many diagonals can be drawn by joining the vertices of an octagon?

Consider the following pattern of numbers: Row 1: 8 10 15 13 Row 2: 6 5 7 4 Row 3: 4 6 8 8 Row 4: 6 11 16 ? (The fourth row is obtained from the first three.) What is the number at ? in the above pattern?

With reference to organic farming in India, consider the following statements: 1. 'The National Programme for Organic Production' (NPOP) is operated under the guidelines and directions of the Union Ministry of Rural Development. 2. 'The Agricultural and Processed Food Products Export Development Authority' (APEDA) functions as the Secretariat for the implementation of NPOP. 3. Sikkim has become India's first fully organic State. Which of the statements given above is/are correct?

Consider the following: 1. Birds 2. Dust blowing 3. Rain 4. Wind blowing Which of the above spread plant diseases?

Consider the following statements: 1. The definition of "Critical Wildlife Habitat" is incorporated in the Forest Rights Act, 2006. 2. For the first time in India, Baigas have been given Habitat Rights. 3. Union Ministry of Environment, Forest and Climate Change officially decides and declares Habitat Rights for Primitive and Vulnerable Tribal Groups in any part of India. Which of the statements given above is/are correct?