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Science Proficiency Practice Quiz

Science

A comprehensive collection of practice questions covering Physics, Chemistry, and Biology topics including electrostatics, kinetics, and cell biology.

Physics Chemistry Biology
20 Questions Hard Ages 16+ Oct 2, 2026
Practice Test PDF Answer Key PDF

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About this Study Set

This study set covers Science through 20 practice questions. A comprehensive collection of practice questions covering Physics, Chemistry, and Biology topics including electrostatics, kinetics, and cell biology. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 20 questions from the Science Proficiency Practice Quiz study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the value of sin 15 degrees?
  • A (sqrt(6)-sqrt(2))/4
  • B (sqrt(3)+1)/2
  • C 1/2
  • D (sqrt(2)+1)/4
2 Which equation represents the slope of a straight line 3y = x + 3?
  • A tan 30
  • B tan 60
  • C tan 45
  • D tan 90
3 What is the unit of the rate constant for an nth order reaction?
  • A litre^(1-n) mol^(1-n) sec^-1
  • B mol^(n-1) litre^(n-1) sec^-1
  • C mol^(1-n) litre^(n-1) sec^-1
  • D None
4 Which phase of the cell cycle involves DNA replication?
  • A G1 phase
  • B S phase
  • C G2 phase
  • D M phase
5 What is the result when karyokinesis is not followed by cytokinesis?
  • A Synaptonemal complex
  • B Syncytium
  • C Recombination nodules
  • D Terminalisation
6 Which enzyme is responsible for catalyzing crossing over during meiosis?
  • A DNA polymerase
  • B Ligase
  • C Recombinase
  • D Helicase
7 If a vector A is perpendicular to vector B, what is their dot product?
  • A 1
  • B 0
  • C infinity
  • D Undefined
8 What is the SI unit of electric flux?
  • A N/C
  • B Nm^2/C
  • C C/m^2
  • D V/m
9 Which of the following is a unit of electric potential?
  • A [M1L2T^-2A^-1]
  • B [M1L2T^-3A^-1]
  • C [M1L2T^-3A^1]
  • D [M1L2T^-1A^-1]
10 What happens to the rate of a zero-order reaction if concentration is doubled?
  • A Doubles
  • B Halves
  • C Remains same
  • D Quadruples
11 Which of these is the most abundant protein in the biosphere?
  • A Collagen
  • B Keratin
  • C RuBisCO
  • D Hemoglobin
12 What is the typical arrangement of microtubules in a motile eukaryotic flagellum?
  • A 9+0
  • B 9+1
  • C 9+2
  • D 8+2
13 Which term describes the movement of water across a selectively permeable membrane?
  • A Diffusion
  • B Active transport
  • C Osmosis
  • D Facilitated diffusion
14 What is the concentration of a 1000g CaCO3 solution containing 10g carbonate in ppm?
  • A 10000 ppm
  • B 1000 ppm
  • C 100 ppm
  • D 10 ppm
15 Which charge transfer property describes body A gaining positive charge?
  • A Lost electrons
  • B Gained electrons
  • C High work function
  • D None
16 What is the relationship between electric field and charge density inside a sphere?
  • A Inversely proportional
  • B Directly proportional
  • C Constant
  • D Zero
17 At what temperature are the rate constants k1 and k2 equal for the given Arrhenius equations?
  • A 1000 K
  • B 2000 K
  • C 1000/ln(10) K
  • D None
18 Which structure in the cockroach is the passage for faeces, urine, and sperms?
  • A Ovary
  • B Cloaca
  • C Spermatheca
  • D Vagina
19 Which statement is false regarding proteins?
  • A Proteins can act as enzymes
  • B Proteins are homopolymers
  • C Proteins function as hormones
  • D Proteins transport nutrients
20 What is the result of 1 + 1/2 + 1/4 + 1/8 + ...?
  • A 1
  • B 2
  • C 3
  • D Infinite
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