IMAT 2023 question paper

1. A.
   The El Niño phenomenon limits the effects of burning fossil fuels.
2. B.
   June 1979 was the hottest month to date.
3. C.
   The June temperature this year is consistent with an observed trend.
4. D.
   This year, June will be the hottest month on record since 1979.
5. E.
   Temperatures in June are not related to the El Niño phenomenon.

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1. A.
   Edmond Dantès – The Count of Monte Cristo
2. B.
   Florentino Ariza – Love in the Time of Cholera
3. C.
   Gregor Samsa – The Metamorphosis
4. D.
   Leopold Bloom – Ulysses
5. E.
   Elizabeth Bennet – Little Women

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1. A.
   a collection of poems on the Gallic war by Horace.
2. B.
   a painting by Eugène Delacroix.
3. C.
   Julius Caesar’s account of the Gallic war.
4. D.
   an opera by Richard Wagner.
5. E.
   a sculpture by Auguste Rodin.

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1. A.
   Head of Government but not Head of State.
2. B.
   Head of Government and Head of the High Council of the Judiciary.
3. C.
   Head of State and Head of the High Council of the Judiciary.
4. D.
   neither Head of State nor Head of Government.
5. E.
   Head of State but not Head of Government.

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1. A.
   42
2. B.
   18
3. C.
   28
4. D.
   14
5. E.
   36

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1. A.
   4:1
2. B.
   2:1
3. C.
   1:1
4. D.
   32/1
5. E.
   16:1

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1. A.
   7.10 €
2. B.
   6.90 €
3. C.
   6.60 €
4. D.
   6.80 €
5. E.
   6.70 €

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1. A.
   Social and scientific advances are of equal importance.
2. B.
   There are a number of similar projects run by other international agencies.
3. C.
   The economic benefits derived from the Copernicus programme outweigh its costs.
4. D.
   The Copernicus project requires international cooperation to be effective.
5. E.
   Some of Copernicus' benefits can be provided by other means.

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1. A.
   Early promise does not guarantee high achievement in the long-term.
2. B.
   Numerical skills are harder to improve than language skills.
3. C.
   Rates of improvement from a low base will always be more rapid than progress from a higher base.
4. D.
   The ‘Matthew effect’ is the result of low expectations by teachers.
5. E.
   It is easier to teach brighter students than those who are below average.

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1. A.
   3-4-1-2
2. B.
   2-1-4-3
3. C.
   3-4-2-1
4. D.
   4-2-3-1
5. E.
   4-2-1-3

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1. A.
   Women are more likely to suffer from DMD than men.
2. B.
   To develop the condition, a man must inherit one of the recessive alleles of this gene.
3. C.
   DMD is a sex-linked inherited disease.
4. D.
   To develop the condition, a woman must inherit two recessive alleles of this gene.
5. E.
   The rate at which the mutated allele spreads is influenced by the rate at which the associated X chromosome spreads within the population.

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1. A.
   X and Y
2. B.
   Y and W
3. C.
   X and Z
4. D.
   Y and Z
5. E.
   W and Q

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1. A.
   Thymine
2. B.
   Uracil
3. C.
   Guanine
4. D.
   Deoxyribose
5. E.
   Adenine

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1. A.
   1 and 2
2. B.
   1, 2, and 3
3. C.
   2 and 3
4. D.
   3 only
5. E.
   1

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1. A.
   1 only
2. B.
   1, 2 and 3
3. C.
   1 and 4
4. D.
   1 and 2
5. E.
   4 only

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1. A.
   Mitochondria, Vacuole, Golgi Apparatus
2. B.
   Nucleus, Plastid, Golgi Apparatus
3. C.
   Golgi Apparatus, Ribosome, Mitochondria
4. D.
   Plastid, Endoplasmic Reticulum, Vacuole
5. E.
   Plastid, Mitochondria, Nucleus

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1. A.
   2 and 3
2. B.
   3
3. C.
   1 and 2
4. D.
   1
5. E.
   2

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1. A.
   Formation by the effect of X-rays
2. B.
   Having a dominant mutation
3. C.
   Occurrence in body cells
4. D.
   Occurrence in germ cells
5. E.
   Having a recessive mutation

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1. A.
   Redox reactions involve the absorption of energy, where the molecule that gains energy is reduced, and the molecule that loses energy is oxidized.
2. B.
   Redox reactions involve the transfer of electrons, where the molecule that gains electrons is reduced, and the molecule that loses electrons is oxidized.
3. C.
   Redox reactions involve the destruction of molecules, where the molecule that gains fragments is reduced, and the molecule that loses fragments is oxidized.
4. D.
   Redox reactions involve the formation of covalent bonds, where the molecule that gains bonds is reduced, and the molecule that loses bonds is oxidized.
5. E.
   Redox reactions involve the absorption of light, where the molecule that gains light is reduced, and the molecule that loses light is oxidized.

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1. A.
   0.4
2. B.
   0.8
3. C.
   1.0
4. D.
   0.2
5. E.
   0.6

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1. A.
   Pineal gland
2. B.
   Hippocampus
3. C.
   Thalamus
4. D.
   Corpus callosum
5. E.
   Amygdala

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1. A.
   $\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{CO}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} + \text{energy}$
2. B.
   $\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{CO}_2 + \text{energy} \rightarrow 12\text{CO}_2 + 6\text{H}_2\text{O}$
3. C.
   $\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{CO}_2 + \text{energy} \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O}$
4. D.
   $6\text{CO}_2 + 6\text{H}_2\text{O} + \text{energy} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2$
5. E.
   $6\text{CO}_2 + 6\text{H}_2\text{O} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + 6\text{CO}_2 + \text{energy}$

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1. A.
   1 - 2 - 3
2. B.
   2 - 1 - 3
3. C.
   1 - 3 - 2
4. D.
   2 - 3 - 1
5. E.
   3 - 2 - 1

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1. A.
   4.7%
2. B.
   7.8%
3. C.
   9.4%
4. D.
   18.8%
5. E.
   14.1%

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1. A.
   Prokaryotic DNA contains introns and exons within its coding regions.
2. B.
   Prokaryotic DNA is linear, with multiple chromosomes contained within a nuclear membrane.
3. C.
   Prokaryotic DNA is highly condensed and organized into chromatin fibers.
4. D.
   Prokaryotic DNA is associated with histone proteins and undergoes meiotic cell division during replication.
5. E.
   Prokaryotic DNA consists of circular chromosomes located within the cytoplasm.

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1. A.
   6, 12, 16
2. B.
   12, 24, 28
3. C.
   4, 12, 12
4. D.
   6, 12, 20
5. E.
   6, 16, 12

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1. A.
   The surface area-to-volume ratio varies randomly during cell growth.
2. B.
   The surface area-to-volume ratio increases as the cell grows larger.
3. C.
   The surface area-to-volume ratio is unrelated to cell growth.
4. D.
   The surface area-to-volume ratio decreases as the cell grows larger.
5. E.
   The surface area-to-volume ratio remains constant during cell growth.

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1. A.
   The Golgi apparatus processes lipid molecules as they enter the cell.
2. B.
   There is no Golgi apparatus in neuronal cells.
3. C.
   Lysosomes digest the vesicles released from the Golgi apparatus so the proteins can be released from the cell.
4. D.
   Before exiting the cell, the proteins packaged in the Golgi apparatus are transported to the nucleus for translation verification.
5. E.
   The Golgi apparatus processes and packages proteins to be exported from the cell.

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1. A.
   When four enzyme-catalysed reactions convert each triose phosphate molecule to a molecule of pyruvate.
2. B.
   When glucose-6-phosphate is changed to fructose-6-phosphate.
3. C.
   During the phosphorylation of both glucose and fructose-1-phosphate.
4. D.
   To convert fructose 1-6-diphosphate to glyceraldehyde 3-phosphate and dihydroxy-acetone phosphate.
5. E.
   In the steps in which dehydrogenase enzymes are involved.

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1. A.
   No, you cannot tell without the sequence of the complementary strand.
2. B.
   Counting the number of hydrogen bonds between the nitrogenous bases provides sufficient information to determine the 5' end.
3. C.
   There is no difference between the 5’ and 3’ ends of a single strand of DNA.
4. D.
   No, unless you know the position of the phosphate group, you cannot differentiate the 3' end from the 5' end.
5. E.
   Yes, the 5' end begins with the start codon AUG.

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1. A.
   3
2. B.
   2
3. C.
   2, 3 and 4
4. D.
   4
5. E.
   1 and 2

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1. A.
   1 and 5
2. B.
   1, 2 and 3
3. C.
   4 and 5
4. D.
   1, 2, 3 and 4
5. E.
   All the statements are correct

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1. A.
   $x$
2. B.
   $2x$
3. C.
   $2x+4$
4. D.
   $x+2$
5. E.
   $x-2$

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1. A.
   $\dfrac{27}{327}P$
2. B.
   $\dfrac{P}{2}$
3. C.
   $P$
4. D.
   $2P$
5. E.
   $\dfrac{327}{27}P$

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1. A.
   2, 1, 4, 5, 3
2. B.
   5, 3, 1, 2, 4
3. C.
   4, 2, 1, 5, 3
4. D.
   3, 4, 1, 5, 2
5. E.
   3, 5, 1, 2, 4

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1. A.
   1 and 2 only
2. B.
   2 and 3 only
3. C.
   1, 2 and 3
4. D.
   1 only
5. E.
   3 only

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1. A.
   A reducing agent
2. B.
   A catalyst
3. C.
   A base
4. D.
   An oxidising agent
5. E.
   An acid

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1. A.
   Nitrogen dioxide
2. B.
   Sulfur dioxide
3. C.
   Sulfur trioxide
4. D.
   Silicon dioxide
5. E.
   Carbon dioxide

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1. A.
   Liquid water has a greater volume than ice as the particles have more kinetic energy
2. B.
   Ice has a greater volume than liquid water as the particles have more kinetic energy
3. C.
   Liquid water has a greater volume than ice as the particles are further apart
4. D.
   Ice has a greater volume than liquid water as the particles are further apart
5. E.
   Liquid water and ice have the same volume, which explains why ice partially floats in water

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1. A.
   The position of equilibrium lies over to the right-hand side
2. B.
   An increase in pressure will increase the time taken to reach equilibrium
3. C.
   There are more moles on the right-hand side of the equilibrium equation
4. D.
   Addition of a suitable catalyst will increase the equilibrium yield obtained
5. E.
   At a lower temperature the value of $K_c$ will increase

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1. A.
   Amide
2. B.
   Ketone
3. C.
   Carboxylic acid
4. D.
   Amine
5. E.
   Aldehyde

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1. A.
   Elements = 1, molecules = 2
2. B.
   Elements = 3, molecules = 4
3. C.
   Elements = 1, molecules = 4
4. D.
   Elements = 3, molecules = 2
5. E.
   Elements = 5, molecules = 4

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1. A.
   Lithium (Z = 3)
2. B.
   Sodium (Z = 11)
3. C.
   Neon (Z = 10)
4. D.
   Potassium (Z = 19)
5. E.
   Argon (Z = 18)

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1. A.
   $\text{SF}_6$
2. B.
   $\text{PF}_3$
3. C.
   $\text{CF}_4$
4. D.
   $\text{BeF}_2$
5. E.
   $\text{PF}_5$

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1. A.
   $\text{Cl}_2$
2. B.
   $\text{TiO}_2$
3. C.
   none of these substances - it is not a redox reaction
4. D.
   C
5. E.
   C and $\text{Cl}_2$

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1. A.
   $\dfrac{50/56}{80/160} \times 100$
2. B.
   $\dfrac{25/112}{80/160} \times 100$
3. C.
   $\dfrac{50}{80} \times 100$
4. D.
   $\dfrac{25}{80} \times 100$
5. E.
   $\dfrac{50}{56} \times 100$

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1. A.
   $\text{HO–CH}_2\text{–CH}_2\text{–OH}$
2. B.
   $\text{HO–SO}_2\text{–OH}$
3. C.
   $\text{H–CO–CO–H}$
4. D.
   $\text{H–CO–OH}$
5. E.
   $\text{HO–CO–CO–OH}$

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1. A.
   $\dfrac{1}{e^{y/2}-1},\ y > 1$
2. B.
   $\dfrac{e^{y/2}}{e^{y/2}-1},\ y > 0$
3. C.
   $\dfrac{1}{e^{y/2}-1},\ y > 0$
4. D.
   $\dfrac{1}{e^{y/2}-1},\ y \neq 0$
5. E.
   $\dfrac{e^{y/2}}{e^{y/2}-1},\ y > 1$

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1. A.
   $\{1, 2\}$
2. B.
   $\varnothing$
3. C.
   $(1, 2)$
4. D.
   $\mathbb{R}$
5. E.
   $(-\infty, 1) \cup (2, +\infty)$

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1. A.
   14:25
2. B.
   3:5
3. C.
   11:25
4. D.
   3:7
5. E.
   4:7

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1. A.
   5/36
2. B.
   6/36
3. C.
   3/36
4. D.
   7/36
5. E.
   4/36

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1. A.
   20
2. B.
   2
3. C.
   1
4. D.
   40
5. E.
   4

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1. A.
   $-1 < x \le 1$
2. B.
   $x > -1$
3. C.
   $x \ge 1$
4. D.
   $x > 1$
5. E.
   $x \le -1$ or $x > 1$

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1. A.
   2
2. B.
   5
3. C.
   1
4. D.
   4
5. E.
   3

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1. A.
   $\sqrt{2^x}$
2. B.
   $2^x$
3. C.
   $2^{2x}$
4. D.
   2
5. E.
   $\left(\sqrt{2}\right)^x$

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1. A.
   $v_A = \frac{1}{2}v;\ v_B = \frac{1}{2}v$
2. B.
   $v_A = \frac{2}{3}v;\ v_B = \frac{1}{3}v$
3. C.
   $v_A = \frac{1}{3}v;\ v_B = \frac{1}{2}v$
4. D.
   $v_A = \frac{1}{3}v;\ v_B = \frac{2}{3}v$
5. E.
   $v_A = \frac{1}{2}v;\ v_B = \frac{1}{3}v$

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1. A.
   25°C
2. B.
   50°C
3. C.
   −124°C
4. D.
   13°C
5. E.
   −149°C

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1. A.
   $\dfrac{McT_1}{L_f}$
2. B.
   $\dfrac{Mc(T_1 - T_2)}{L_f + cT_2}$
3. C.
   $\dfrac{Mc(T_1 - T_2)}{L_f}$
4. D.
   $\dfrac{Mc(T_1 - T_2)}{L_f + cT_1}$
5. E.
   $\dfrac{McT_1}{L_f + cT_2}$

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1. A.
   20
2. B.
   14
3. C.
   40
4. D.
   8
5. E.
   56

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1. A.
   $Q_2$
2. B.
   $Q_1$
3. C.
   $\dfrac{Q_1R_1 + Q_2R_2}{R_1 + R_2}$
4. D.
   $\dfrac{Q_1R_1^2 + Q_2R_2^2}{R_1^2 + R_2^2}$
5. E.
   0

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