Challenger App

No.1 PSC Learning App

1M+ Downloads
The Bharatiya Sakshya Adhiniyam(BSA) places emphasis on the use of technology to ensure the authenticity of evidence. This is particularly relevant for:

Read the below statements marked as Assertion (A) and Reason (R). Mark the correct options:

Assertion (A): The One Nation One Ration Card ensures portability of food grains.
Reason (R): It uses Aadhaar-enabled biometric authentication.

Cheraw, the bamboo dance performed using crossed bamboo sticks, is a folk dance of which state?
Education is now placed under which list after the 42nd Amendment?
What is the main objective of the National Framework for Climate Services (NFCS) launched in 2024?
Argon is produced in Earth’s crust via?
Which of the following is true about Fundamental Rights and DPSPs?
The average of 15 numbers is 80. The average of the first 6 numbers is 72. The average of the next 6 numbers is 25% more than the average of the first 6 numbers. The 13th number is 8 more than the 15th number, and the 14th number is 10 less than the 15th number. What is the average of the 13th and 14th numbers?
A landlord bought a flat for 8,00,000. He wants to earn a 9% annual return on his investment after paying 2,000 per month for maintenance. What should be the monthly rent he charges?
An amount is said to double in 5 years with compound interest. How many years will it take for the amount to grow to 8 times its original value?
A sum becomes ₹6,600 in 2 years and ₹7,920 in 3 years at compound interest. What is the original principal?
Suman purchased 25 liters of milk at ₹45 per liter and another 15 liters of milk at ₹50 per liter. She combined both quantities and then sold the entire mixture at ₹48 per liter. What was her total profit or loss?
A toy manufacturer produced 1200 toy cars at a total cost of ₹90,000. He donated 200 cars to a charity event. For the rest, he announced a 10% discount on the market price of ₹120 per car. He also offered 2 toy cars free for every 8 toy cars purchased. If all 1200 toy cars were distributed, what is his overall gain or loss percentage?
A retailer marks an air conditioner 80% above its cost price. He offers a first discount of 25% on the marked price. During a festive offer, an additional discount of 10% is applied on the already discounted price. If the final selling price is ₹15,552, what is the approximate cost price of the air conditioner?"
65 A 40-liter mixture contains juice and water in the ratio 5:3. How much water (in liters) must be added to this mixture to change the ratio of juice to water to 2:3?
A is able to complete a task in 15 days, while B takes 20 days to finish the same task. If they collaborate and work together for 4 days, what fraction of the work will still remain?
Two oils priced at ₹90 per kg and ₹150 per kg are blended and sold at ₹144 per kg, achieving a profit margin of 20%. What is the ratio of the two oils in the mixture ?
Which of the following features distinguishes the Elephanta Caves from other rock-cut sites of early India?
Three pipes, A, B, and C are capable of filling a tank in 6, 8, and 12 hours, respectively. When all three pipes are opened together, they operate for 2 hours before pipe C is closed. How much additional time will it take to completely fill the tank after that?
A bullet train covers a fixed distance in 30 minutes at an average speed of 240 km/h. Due to track maintenance, it neehttos://gscstudy.com/ diverted, increasing the distance by 20%. If the train needs to arrive at its destination on time (i.e., in 30 minutes), what should its new average speed be in km/h?
Two cars, X and Y, start from points 360 km apart and travel at constant speeds. If they move towards each other, they meet in 4 hours. If they move in the same direction, they meet in 12 hours. What is the speed of car X? (Assume X is the faster car).
A circular pizza having a radius of 21 cm. If 75% of it is eaten, what is the area of pizza remaining?
A ring-shaped disc has outer radius 10 cm and inner radius 7 cm. What is the approximate ratio of the ring's area to the whole outer circle?
A bicycle wheel having a radius of 35 cm. What percentage of its circumference is covered in a quarter turn? ( Use T=22/7)
The line y = mx + 5 passes through (1,8). Find m.
Convert the sentence provided below from its passive voice structure to an active voice structure: It was being suggested by multiple sources that the operation had been compromised internally.

313+183373+21031^3+18^3-37^3+210 is equal to :

Read the statements about the Goncha Festival of Bastar: Which of the above statements are correct?

  1. Tupki, a mock gun made of bamboo, uses Goncha fruit as bullets.
  2. The chariot procession was started by Chalukya rulers.
  3. Rath Yatra begins on Ashadh Shukla Dashmi and ends on Dutiya.
    Fill in the blanks: In Carnatic music, a laghu with five beats is known as.................... jaati.
    Read the following passage and answer the questions based on the passage: According to the passage, how is wisdom primarily acquired?
    Read the following passage and answer the questions based on the passage: What does the author mean by "wisdom enriches the soul"?
    Which of the following statements about Judo is correct?
    Read the following passage and answer the questions based on the passage: Who, according to the author, can be wise despite lacking formal education?
    Where and when will the 59th National Cross Country Championships-2025 be held?
    Read the following passage and answer the questions based on the passage: What is the central contrast drawn in the passage?
    What is the core structural focus of the 2024 India-UAE Bilateral Investment Treaty (BIT) within India's in strategy?
    Fill in the blanks: The Santosh Trophy 2022-23 final was uniquely held in...................... where Karnataka defeated Meghalaya to
    Which of the following statements best captures the essence of "Landscapes of Loss: The Story of an Indian drought by kavitha iyer

    Which of the following statements about Justice Sanjiv Khanna is/are true?

    1. He is the 51st Chief Justice of India
    2. He succeeded Justice D.Y. Chandrachud
    3. . He served as CJI from 2023

      Which of the following objectives are part of the National Population Policy (NPP) 2000?

      1. Providing free and compulsory education up to 14 years of age
      2. Increasing fertility rate to ensure demographic dividend
      3. Reducing infant mortality rate below 30 per 1000 live births
      4. Promoting delayed marriage for girls
        Which pathway in cellular respiration generates the most ATP?

        Consider the following statements about glacial landforms: Which of the following Statements is/are Correct?

        1. Statement 1: Hanging valleys are often found opening into main glacial valleys at higher elevations,
        2. Statement 2: Spurs of such hanging valleys are frequently truncated into trangular facets.
          What is the primary function of the Crew Escape System (CES) on ISRO's Human Rated LVM3 (HLVM3) rocket?
          Read the following passage and answer the questions based on the passage: According to the author, why has the gap between education and wisdom widened in recent times?

          Choose the most suitable option to replace the highlighted part of the sentence: She has the reputation to be a kind woman.

          Choose the most suitable option to replace the highlighted part of the sentence: The doctor advised him to avoid eating sweets and doing exercise regularly.

          A sentence is provided in direct speech. From the four given options, choose the one that most accurately conveys the sentence in its corresponding indirect speech. He asked me, "Have you done your homework?"
          A sentence is provided in indirect speech. From the four given options, choose the one that most accurately conveys the sentence in its corresponding direct speech. He said that he would join the meeting after lunch.

          Rearrange the following sentences in correct order to make a logical passage:

          1. A media strategy was framed based on outreach results.

          2. Demographic metrics were tracked from campaign dashboards.

          3. User interactions were collected across platforms.

          4. Analysts segmented users by age and behavior.

          Rearrange the following sentences to form a coherent paragraph:

          1. It is a process that involves the systematic and objective investigation of a subject to discover new facts or to confirm existing ones

          2.Research is a foundational pillar of academic and scientific progress.

          3. This can be either theoretical, aiming to expand knowledge, or applied, seeking to solve a practical problem.

          4. The findings of this investigation are then documented and peer-reviewed to ensure validity and credibility.