Chemistry Quiz Quiz

Test your knowledge and reasoning skills with this challenging 15-question quiz on general aptitude and core chemistry concepts, including polygon geometry, analogies, calculation, and chemical processes. This quiz is designed for competitive exam preparation and covers key topics such as sentence completion, logical reasoning, and fundamental chemical properties.

1. Analogy Completion

   Courage is to Bravery as Yearning is to which of the following?

   1. Glaring
   2. Longing
   3. Yawning
   4. Yelling

2. Sentence Completion

   We ______ tennis in the lawn when it suddenly started to rain.

   1. have been playing
   2. had been playing
   3. would have been playing
   4. could be playing

3. Digital Image Analysis

   Given a 4 × 4 digital image with pixel intensities as follows: 0 1 0 2, 4 7 3 3, 5 5 4 4, 6 7 3 2; how many pixels have a value U ≤ 4?

   1. 8
   2. 3
   3. 9
   4. 11

4. Pattern Matching in Figures

   Given numbers associated with rectangle = 1, triangle = 2, and ellipse = 3, and the diagram labels P, Q, and R, which combination is correct?

   1. P=3; Q=6; R=6
   2. P=5; Q=3; R=6
   3. P=5; Q=6; R=3
   4. P=6; Q=5; R=3

5. Geometric Reasoning

   A rectangle has length L and width W (with L u003E W). If the width is increased by 10%, which one of the following is always true for all L and W?

   1. Perimeter increases by 10%.
   2. Area increases by 10%.
   3. The rectangle becomes a square.
   4. Length of the diagonals increases by 10%.

6. Statement and Response Matching

   Match each statement from Shanthala (This house is in a mess; I am not happy with my marks; Politics is a subject I avoid talking about; I don’t know what this word means) to Kanishk’s responses (No problem, let me clear it up for you; Don’t worry, I will take it up with your teacher; Alright, I won’t bring it up during our conversations; Well, you can easily look it up). Which is the correct match?

   1. P–2; Q–3; R–1; S–4
   2. P–4; Q–1; R–2; S–3
   3. P–3; Q–4; R–1; S–2
   4. P–1; Q–2; R–4; S–3

7. Monotonic Function Application

   If weight as a function of age increases until 50 years and decreases thereafter, and two brothers' ages are a₁ u003C a₂, which statement is correct for when their weights are equal?

   1. a₁ u003C a u003C 50
   2. a₁ u003C 50 u003C a₂
   3. 50 u003C a u003C a₂
   4. Either a₁ = 50 or a₂ = 50

8. Polygon Geometry

   A regular dodecagon (12 sides) inscribed in a circle with radius r has all its triangles (numbered 1 to 12) used to form squares of side d. What is the number of squares formed and the number of triangles required for each?

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

9. Algebraic Manipulation

   If a real variable x satisfies 3^2x2 = 27 × 9^x, what is the value of (2^x2)/(2^x)?

   1. 2^-1
   2. 2^15
   3. 2^0
   4. 2^3

10. Average Calculation

    Dr. Gita earns ₹1000 × (X − 0.2) per shift, where X is her number of patients per shift. If over 100 shifts her patients per shift statistics are: 10 shifts – 5 patients, 20 shifts – 6 patients, 40 shifts – 7 patients, 30 shifts – 8 patients, what is her average earnings per shift?

    1. 6,000
    2. 6,500
    3. 6,300
    4. 6,100

11. Chemical Properties – Superbases

    Which phosphazene compound among the following acts as a superbase?

    1. N=P(NMe2)3
    2. N-P-N
    3. Bu N Bu Bu P-NH Bu
    4. CI CH3 Si CH2 CI—P=N CH3 CI

12. Process Chemistry

    Me₂SiCl₂ is synthesized via the Rochow-Müller process. Which reaction scheme correctly represents this process?

    1. SiCl₄ – 2 MeMgB at 0°C
    2. Si:Cu (8:1) + 2 MeCl at 300°C
    3. SiCl₄ + Me₂Zn at 0°C
    4. Si:Fe (8:1) - 2 MeCl at 300°C

13. Solid-State Magnetism

    When MnO is cooled from room temperature, its magnetic susceptibility gradually increases until 118 K and then decreases. What is this phenomenon called?

    1. paramagnetism
    2. ferromagnetism
    3. ferrimagnetism
    4. antiferromagnetism

14. Solution Color Change Mechanism

    An aqueous solution of Co(ClO₄)₂·6H₂O is light pink but turns intense blue upon addition of conc. HCl. What is the new species responsible for the blue color?

    1. [CoCl₄]²⁻
    2. [Co(H₂O)₆]²⁺
    3. [Co(H₂O)₄Cl₂]
    4. [CoCl(H₂O)₅]⁺

15. General Aptitude – Vocabulary

    Select the word that best fits: His explanation was so ______ that everyone understood instantly.

    1. elusive
    2. lucid
    3. rigid
    4. obscure