Challenger App

No.1 PSC Learning App

★
★
★
★
★
1M+ Downloads
If a person weighs 66 kg on the Earth, how much is his weight on the moon?
WHO has established __________ initiative for the prevention and control of noncommunicable diseases?
How will the light rays passing from air into a glass prism bend?
To change a temperature on the Kelvin scale to the Celsius scale, you have to ________ the given temperature
Food cans are coated with tin and NOT zinc because?
The force of attraction between two objects of masses M and m which lie at a distance d from each other is inversely proportional to?
All acids produce ___________ gas on reacting with metals?
The valency of nitrogen in NH3 is?
What is the resultant resistance of 3 Ω and 6 Ω resistances connected in series?
Which of these diseases is usually transmitted by mosquitoes?
Which of the following created the office of Governor General of India?
Which of the following occurs due to deficiency of vitamin K?
Which Indian waterfall has four distinct falls namely Raja, Rani, Rocket and Roarer in it?
Mukhyamantri Yuva Swabhiman Yojana launched by Madhya Pradesh government is associated with?
Who among the following was posthumously awarded the Bharat Ratna in 2019?
A substance that increases the rate of a reaction without itself being consumed is called?
With which of the following sports is Mahesh Bhupathi associated?
What determines the sex of a child?
Which is the hardest substance in the human body?
A power plant where the heat required to make steam to drive turbines to make electricity is obtained by burning fuels is called?
What is the distance of the principal focus F from the pole P of the spherical mirror called?
If 3/11 < x/3 < 7/11, which of the following values can 'x' take?
Burning of fossil fuels causes increased amounts of carbon dioxide in atmosphere and what is the name of the harmful effect caused due to this?

How many squares are there in the given figures?

image.png
Who among the following scored the first-ever triple century in a test match?
Age of A : Age of B is 3 : 2. Ten years hence, the sum of their ages will be 80. What are their present ages?
The longest bone in the body is the?
Who presided over the inaugural meeting of the Constituent Assembly of India?

If x + y = 11, then (−1)x+(−1)y(-1)^x + (-1)^y is equal to _____

(where x, y are whole numbers).

Valence shell is the ________ shell of every element?
If 200 men can dig a canal working for 8 hours a day in 6 days, how long will it take to dig the canal, if 300 men work 6 hours per day?
Why should an electrician wear rubber gloves while repairing an electrical switch?
Which of the following games is associated with Thomas Cup?
Facing towards south, Ram started walking and turned left after walking 30 m. He walked 25 m and turned left and walked 30 m. How far and in which direction is he from his starting position?
If BOOK-PEN = 8, then PEN-NIB = ?
Find (1 - cos² θ)(cot²θ + 1) - 1.
image.png
In this question, a statement is given followed by three conclusions. Choose the conclusion(s) which best fit(s) logically. Statement: "Use cold cream for fair complexion"—an advertisement. Conclusions: I. People like to use cream for fair complexion. II. People are easily fooled. III. People respond to advertisements.
What is the gain percent when articles bought at 6 pieces for Rs.5 are sold at 5 pieces for Rs.6?
The perimeter of a rectangle is twice the perimeter of a square of side 18 units. If the breadth of the rectangle is 45, what is its area?
Three men entered into a business in partnership for 14 months, 8 months and 7 months. If the ratio of their profit is 5 : 7 : 8, what is the ratio of their investments?

image.png
image.png

Read the following information carefully and answer the question given below.

Arjun, Banu, Keerthi, Deepan, Harini, Vasanth, Gayathri and Kumar are sitting around a circle facing the center. Banu is third to the right of Vasanth and third to the left of Kumar. Keerthi is fourth to the left of Arjun. Arjun is not an immediate neighbour of Vasanth and Banu. Harini is not an immediate neighbour of Banu. Gayathri is second to the right of Deepan.

Who among the following is third to the left of Harini?

Which Greek letter denotes wavelength?
A certain distance is covered at a certain speed. If half the distance is covered in double the time, what is the ratio of the two speeds?

Read the following information carefully and answer the question given below.

Seven members L, H, K, T, F, J and R represent different countries in Olympics, USA, China, Korea, France, Russia, Australia and Japan; each one competes for a different sport, viz. volleyball, archery, rifle shooting, tennis, boxing, athletics and football. The order of persons, countries and games is not necessarily the same.

K represents China for archery. T represents USA but not for volleyball or rifle shooting. One who represents Japan competes for boxing. F competes for volleyball but not Korea. L represents Australia for athletics. The one who represents Russia competes for tennis. J does not represent Korea or Japan. R competes for rifle shooting.

Which of the following combinations of member, sport and country are CORRECTLY matched?

'A' sells goods to 'B' at 25% profit for Rs.300. 'B' sells it to 'C' at 10% loss. In this sale, C's cost price is equal to what percent of A's cost price?
Who among the following took charge as the MD, CEO of Yes Bank in March 2019?
A man walks 30 m towards south. Then, turning to his right, he walks 30 m. Then, turning to his left, he walks 20 m. Again, turning to his left, he walks 30 m. How far is he from his starting point?
State two factors on which the electrical energy consumed by an electric appliance depends?