Life Sciences Quiz Quiz

Test your knowledge of GATE 2025 Life Sciences (XL) General Aptitude and Chemistry with 15 medium-level multiple-choice questions covering English usage, logic, mathematics, reasoning, and chemistry concepts. Designed to help students practice and assess their understanding for competitive exams.

1. Sentence Completion: Idiom

   Even though I had planned to go skiing with my friends, I had to _____ at the last moment because of an injury.

   1. back up
   2. back on
   3. back out
   4. back of

2. Subject-Verb Agreement

   The President, along with the Council of Ministers, _____ to visit India next week.

   1. is wishing
   2. wish
   3. will wish
   4. wishes

3. Energy Consumption Calculation

   An electricity company charges ₹7 per kWh. A 40-watt desk light used for 10 hours each night for 180 days costs how much? If used for 2 extra hours each night, what is the percentage-increase in cost?

   1. 720; 15%
   2. 604.8; 12%
   3. ₹604.8; 10%
   4. ₹504; 20%

4. Pattern Recognition

   In a specific figure, blocks (i), (ii), (iii), and (iv) are labelled. Which one of the following options correctly represents the entries in these blocks respectively?

   1. I, J, 10, and 8
   2. K, L, 10 and 14
   3. Q, M, 12, and 8
   4. L, K, 12 and 8

5. Pie Chart/Logical Reasoning

   A bag contains Violet, Yellow, Red, and Green balls. If the collected numbers satisfy four linear relations, which of the following pie charts correctly represents their proportions?

   1. G 20% V 30% Y 10% R 40%
   2. G 10% V 20% Y 40% R 30%
   3. G 30% V 40% Y 20% R 10%
   4. G 40% V 10% R 20% Y 30%

6. Reading Comprehension

   Based solely on the passage: 'His life was divided between books, his friends, and long walks...and fruits of his erudition are widely scattered...' Which statement is true?

   1. The solitary man worked in a court where he fell ill.
   2. The solitary man described in the passage found joy in scattering fruits.
   3. The solitary man described in the passage is dead.
   4. Strangers helped create a grand reputation for the solitary man described in the passage.

7. Clock Arrangement Problem

   Given a clock diagram where O = OQSZPRT and X = XZPW YOQ, which sequence represents 'P' most appropriately?

   1. PTVQSUW
   2. PRTOQSU
   3. PUWRTVX
   4. PSUPRTV

8. Number Theory: Permutation Condition

   Consider a five-digit number PQRST with digits 1 to 5, all distinct, and satisfying P u003C Q, S u003E P u003E T, and R u003C T. What is the value of P?

   1. 2
   2. 1
   3. 3
   4. 4

9. Profit u0026 Ratio Problem

   A shopkeeper mixes potatoes of varieties P and Q. P costs ₹300 for 5 kg, Q costs ₹800 for 4 kg, and the mixture sells for ₹192 per kg at 8% profit. What is the P:Q mixing ratio by weight?

   1. 5:4
   2. 1:1
   3. 3:4
   4. 3:2

10. Triangle/Shortest Path Geometry

    Three villages P, Q, and R are such that PQ = 13 km, QR = 14 km, and RP = 15 km. What is the minimum length (in km) needed to connect P to the straight road joining Q and R?

    1. 11.0
    2. 12.0
    3. 10.5
    4. 12.5

11. Organic Chemistry: Reaction Rate Order

    The rate of solvolysis in 80% aqueous ethanol at 25 °C for the following tertiary halides: I, II, III (all Br substituted) has which correct order?

    1. III u003C II u003C I
    2. II u003C I u003C III
    3. I u003C II u003C III
    4. II u003C III u003C I

12. Hydrogen Halide Boiling Points

    What is the correct order of boiling points for the hydrogen halides HF, HCl, HBr, and HI?

    1. HI u003E HBr u003E HCl u003E HF
    2. HF u003E HBr u003E HI u003E HCl
    3. HCl u003E HF u003E HBr u003E HI
    4. HF u003E HI u003E HBr u003E HCl

13. Logical Reasoning: Series

    Which number should come next in the sequence: 2, 6, 12, 20, 30, ?

    1. 36
    2. 42
    3. 40
    4. 44

14. Analogy/Pattern Completion

    If the word 'TEACH' is coded as 5-1-3-8-2, how is 'REACH' coded using the same scheme?

    1. 5-1-3-8-1
    2. 4-1-3-8-2
    3. 4-1-3-4-2
    4. 5-3-1-8-2

15. Mathematical Reasoning: Probability

    Two fair dice are rolled together. What is the probability that the sum of the numbers is 7?

    1. 1/8
    2. 1/12
    3. 1/9
    4. 1/6