Challenger App

No.1 PSC Learning App

1M+ Downloads
The product of two numbers is 1472 and their HCF is 8. Find their LCM.
Each vowel in the word INCURABLE is changed to the letter following it in the English alphabetical order and each consonant is changed to the letter preceding it in the English alphabetical order. How many vowels will be there in the new word thus formed?
Shyam walked 10 m towards the north and then turned left and walked 11 m. He then turned right and walked for 13 m, turned right again and walked for 10 m. He then turned left and walked 14 m, and then finally turned right and walked 1 m. How far is Shyam from the starting point? (All turns are 90 degree turns only)
image.png
A ray of light is incident on the pole of a concave mirror. The acute angle between the incident ray and the principal axis will be called?
On 14 February 2022, ISRO successfully launched its first earth observation satellite of 2022, EOS-04. It was launched by which rocket?
How many language universities are located in India as on June 2022?
If a coil of a conductor with 50 Ω resistance is subjected to time varying magnetic field such that the EMF induced is 5 V, then the induced current in the coil is?
Which group of the modern periodic table is NOT mentioned in Mendeleev's periodic table?
Name India's lone participant in the winter Olympics, who finished 45th in the giant slalom event?
image.png
In which year did the Indira Gandhi Government devalue the India Rupee?
In which year was The Municipal Corporation in Calcutta set up by a royal charter?
Which of the following materials is preferably used for electrical transmission lines?
The Bishnoi community contributes to forest and animal conservation in _________?
In which year was the 11th Fundamental Duty added in the Indian Constitution?
In chemical reaction N2 + xH₂ → 2NH3, what is the value of x?
Aerenchyma cells are present in ______?
image.png
According to Fleming's right-hand rule, the index finger and the central finger of the right hand represent directions of ______and _________respectively?
An electric oven is rated 2500 W. The energy used by it in 5 hours will be?
The value of absolute refractive index of a medium is always?
Which regulatory body is the only note issuing authority in India?
What temperature will be required for the preparation of Plaster of Paris from gypsum?
Which of the following environmental factors plays an important role in deciding the sex of a developing organism in some animals?
Where is the respiratory pigment in human body present?

Fill in the blank using the appropriate form of the verb.

Usually they play cricket but now they ______ football.

Select the appropriate question tag. They rarely visit us, ______?
From which year onwards in the Union of India Budget presented on 1 February instead of the last working day of February?
Against which of the following Acts did Mahatma Gandhi decide to launch nationwide Satyagraha in 1919?
The term 'Panthalassa' is related to which of the following?
World Wetland Day was celebrated on 2 February 2022. What was theme of this year?
A current of 5 A flows through an electrical appliance when the potential difference of 50 V is applied across its terminals. What will be the current drawn by the appliance if the potential difference is increased to 110 V?
In which state will you find the Mahendragiri Hills?

Select the incorrect statements from among the following.

  1. (i) Newland arranged the elements in the order of increasing atomic masses and gave the law of Octaves.
  2. (ii) Sodium is the eighth element after lithium.
  3. iii) Calcium is the eighth element after Beryllium.
  4. (iv) The law of Octaves was applicable only up to Magnesium, as after Magnesium every eighth element did not possess properties similar to that of the first.
    In human males, the sex chromosomes present are XY. What is the difference between them?
    In which of the following cities did Gautam Buddha get enlightenment?
    Which among the following States topped the 4th Khelo India Youth Games 2021 medals tally?

    Read the given statement and conclusions carefully. Assuming that the information decide which of the given conclusions logically follow(s) from the statement. given in the statements is true,

    Statement:

    Team A students lost 14 out of 20 games they played last season.

    Conclusions:

    I. Team A students are more interested in academics than sports.

    II. Team A students are unlucky.

    In a certain code language, 'CURRY' is written as 'BSONT' and 'KHAKI' is written as 'JFXGD'. How will 'BHEEM' be written in that language?
    The sum of the first 8 prime numbers divided by 7 is equal to
    image.png
    image.png
    How much angular distance will be covered by the minute hand of a correct clock in a period of 3 hours 10 minutes?
    image.png

    Which of the following salts will give an aqueous solution having pH of almost 7?

    1. (i) NH4CI
    2. (ii) Na2CO3
    3. (iii) K2SO4
      A and B together complete a work in 8 days. If B is 25% more efficient than A, then in how many days will A alone complete the same work?

      What are the two signs to be interchanged for making the following equation correct ?

      $\left[ \left\{ (44 \mathbf{-} 36) \mathbf{+} (4 \times 4) \right\} \div (1 \mathbf{+} 5) \right] \times 2 = 8$

      As of July 2022, students from how many minority communities under the Maulana Azad Fellowship Scheme (MANF) get five year fellowships in the form of financial assistance notified by the Central Government, to pursue M. Phil and Ph.D?

      Which of the following interchanges of signs would make the given equation correct ?

      5×4÷108+2=85\times4\div10-8+2=8