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Question 1:-

Subtopic: B1.1 Characteristics of living organisms

What is meant by respiration?
(A) protein synthesis
(B) sweating to lose heat
(C) the function of lungs
(D) the release of energy

▶️Answer/Explanation

Ans : D

Question 2:-

Subtopic: B2.2 Size of specimens

The diagram shows a cell with a magnification of ×1000.
The width of the image is 45 mm.

What is the actual width of the cell?
(A)  45 mm     (B)  4.5 mm     (C)  0.45 mm     (D)  0.045 mm

▶️Answer/Explanation

Ans : D

Question 3:-

Subtopic: B4.1 Biological molecules

Linoleic acid is a fatty acid.
Which larger molecule may contain linoleic acid?
(A) glycogen
(B) oil
(C) protein
(D) starch

▶️Answer/Explanatio

Ans : B

Question 4:-

Subtopic: B5.1 Enzymes

Which type of molecule are enzymes?
(A) amino acids
(B) carbohydrates
(C) fats
(D) proteins

▶️Answer/Explanation

Ans : D

Question 5:-

Subtopic: B6.1 Photosynthesis

Which two arrows represent photosynthesis?

(A)  1 and 3     (B)  1 and 4    (C)  2 and 3     (D) 2 and 4

▶️Answer/Explanation

Ans : B

Question 6:-

Subtopic: B7.1 Diet

A person has a low red blood cell count and is constipated.
Which row shows the components that may be in short supply in this person’s diet?

▶️Answer/Explanation

Ans : C

Question 7:-

Subtopic: B9.3 Blood vessels

What is the sequence of blood vessels that a red blood cell passes through as it travels from the
vena cava to the kidney?
(A) pulmonary artery → pulmonary vein → aorta → renal artery
(B) pulmonary artery → pulmonary vein → aorta → renal vein
(C) pulmonary vein → pulmonary artery → aorta → renal artery
(D) pulmonary vein → pulmonary artery → aorta → renal vein

▶️Answer/Explanation

Ans : A

Question 8:-

Subtopic: B11.1 Gas exchange in humans

In the diagram of the human breathing system, which structures are correctly labelled?

(A) alveoli and bronchiole
(B) alveoli and trachea
(C) bronchus and bronchiole
(D) bronchus and trachea

▶️Answer/Explanation

Ans : B

Question 9:-

Subtopic: B13.2 Hormones

What are the effects of adrenaline?

▶️Answer/Explanation

Ans : D

Question 10:-

Subtopic: B15.1 Asexual reproduction

In a plant, what leads to offspring that are genetically identical to the parent?
(A) asexual reproduction
(B) insect pollination
(C) seed germination
(D) sexual reproduction

▶️Answer/Explanation

Ans : A

Question 11:-

Subtopic: B16.1 Chromosomes and genes

The diagram shows eggs and sperm containing sex chromosomes.

Which row gives the correct combination of sex chromosomes for a male and female offspring?

▶️Answer/Explanation

Ans : B

Question 12:-

Subtopic: B18.2 Food chains and food webs

How do herbivores get their energy?
(A) by eating animals and plants
(B) by eating animals only
(C) by eating plants only
(D) directly from sunlight

▶️Answer/Explanation

Ans : C

Question 13:-

Subtopic: B18.3 Carbon cycle

The graph shows the change in atmospheric carbon dioxide levels over time.

A reduction of which process could cause the change in carbon dioxide shown?
(A) combustion
(B) decomposition
(C) photosynthesis
(D) respiration

 ▶️Answer/Explanation

Ans : C

Question 14:-

Subtopic: C12.4 Separation and purification

An aqueous salt solution contains an insoluble impurity.
Which processes are used to obtain pure salt crystals?
(A) distillation then crystallisation
(B) distillation then chromatography
(C) filtration then crystallisation
(D) filtration then chromatography

▶️Answer/Explanation

Ans : C

Question 15:-

Subtopic: C2.2 Atomic structure and the Periodic Table

The element phosphorus burns in air, as shown.
4P + 5O2 → P4O10
What does the formula P4O10 show?
(A) a mixture of atoms of two elements
(B) a mixture of molecules of two elements
(C) a molecule of a compound
(D) an atom of a compound

▶️Answer/Explanation

Ans : C

Question 16:-

Subtopic: C2.2 Atomic structure and the Periodic Table

Which row describes an atom that has the nucleon number 24?

▶️Answer/Explanation

Ans : B

Question 17:-

Subtopic: C2.4 Ions and ionic bonds

Lithium is in Group I and bromine is in Group VII of the Periodic Table.
What is the formula of lithium bromide?

(A)  LiBr     (B)  LiBr2     (C)  Li2Br     (D) Li2Br2

▶️Answer/Explanation

Ans : A

Question 18:-

Subtopic: C4.1 Electrolysis

Which diagram shows equipment used to electroplate nickel with copper?

▶️Answer/Explanation

Ans : D

Question 19:-

Subtopic: C5.1 Exothermic and endothermic reactions

Which statement about exothermic and endothermic reactions is correct?
(A) An endothermic reaction involves heat energy being taken in by the reactants.
(B) An exothermic reaction involves heat energy being taken in by the products.
(C) In an endothermic reaction, the temperature of the reaction mixture increases.
(D) In an exothermic reaction, the temperature of the reaction mixture decreases.

▶️Answer/Explanation

Ans : A

Question 20:-

Subtopic: C6.3 Redox

Which statement shows that methane, CH4, is oxidised when it burns?
(A) The products of the reaction are gaseous.
(B) The products of the reaction are water and carbon dioxide.
(C) The reaction is exothermic.
(D) The total number of oxygen atoms has increased during the reaction.

▶️Answer/Explanation

Ans : B

Question 21:-

Subtopic: C7.3 Preparation of salts

Magnesium chloride is prepared by reacting an excess of insoluble magnesium oxide with dilute
hydrochloric acid.
Which processes are used to obtain pure crystals of magnesium chloride from the reaction
mixture?
         1 distillation
        2 evaporation
        3 filtration
(A) 1 followed by 2
(B) 3 followed by 2
(C) 3 followed by 1
(D) 1 followed by 3, followed by 2 

▶️Answer/Explanation

Ans : B

Question 22:-

Subtopic: C8.4 Transition elements

The properties of some substances are listed.
       1  form acidic oxides
       2  have high melting points
       3  act as catalysts
       4  form coloured compounds
What are the properties of transition metals?
(A)  1, 2 and 3     (B)  1, 2 and 4     (C)  1, 3 and 4     (D)  2, 3 and 4

▶️Answer/Explanation

Ans : D

Question 23:-

Subtopic: C10.1 Water

Which statement describes a chemical test for water?
(A) Add blue cobalt(II) chloride.
(B) Add blue copper(II) sulfate.
(C) Measure the boiling point.
(D) Use universal indicator.

▶️Answer/Explanation

Ans : A

Question 24:-

Subtopic: C8.2 Group I properties

Which statement about sulfur is correct?
(A) It is a metallic element.
(B) It is used to make sulfuric acid.
(C) It is in Group VII of the Periodic Table.
(D) An atom of sulfur contains 32 electrons.

▶️Answer/Explanation

Ans : B

Question 25:-

Subtopic: C10.2 Air quality and climate

Which statements about limestone are correct?
           1 Its main constituent is calcium oxide.
           2 It can be used to manufacture lime.
           3 It thermally decomposes to release carbon dioxide.
           4 It is used to neutralise alkaline soils.
(A)  1 and 2     (B)  1 and 4     (C)  2 and 3     (D)  3 and 4

▶️Answer/Explanation

Ans : C

Question 26:-

Subtopic: C11.3 Fuels

Petroleum is separated into fractions by fractional distillation.
Information about uses of some fractions and positions in the fractionating column where they are
collected is shown.

Which rows are correct?
(A)  1 and 2     (B)  1 and 4     (C)  2 and 3     (D)  3 and 4

▶️Answer/Explanation

Ans : D

Question 27:-

Subtopic: C11.6 Alcohols

Which process forms ethanol?
(A) combustion
(B) cracking
(C) distillation
(D) fermentation

▶️Answer/Explanation

Ans : D

Question 28:-

Subtopic: P1.2 Motion

 The graph shows how the speed of an object varies with time.

What is the distance moved by the object between time 0 s and time 10s?
(A)  30 m     (B)  40 m     (C)  50 m     (D)  80 m

▶️Answer/Explanatio2

Ans : C

Question 29:-

Subtopic: P1.3 Mass and weight

The weight of an object of mass m is given by the expression mg.
Which row gives the units for weight and g?

▶️Answer/Explanation

Ans : D

Question 30:-

Subtopic: P1.5 Forces

The diagrams show all the forces acting on each of four objects.
Which object is not in equilibrium?

▶️Answer/Explanation

Ans : D

Question 31:-

Subtopic: P1.5.2 Turning effect of forces

The diagram shows a triangular sheet of metal with sides of length 50 cm, 40 cm and 30 cm. The
sheet is free to move about a pivot at the top corner, as shown.

A cord is attached to the bottom left corner of the sheet and pulled with a horizontal force of 5.0 N
to the left.
What is the moment of the 5.0 N force about the pivot?
(A)  150Ncm     (B)  200Ncm     (C)  250Ncm     (D)  600Ncm

▶️Answer/Explanation

Ans : B

Question 32:-

Subtopic: P1.6.1 Energy

A skier starts from rest at P, accelerates down a slope and then comes to rest at Q.

Which series of energy transfers takes place?
(A) elastic potential (strain) energy → kinetic energy → thermal energy
(B) gravitational potential energy → kinetic energy → thermal energy
(C) kinetic energy → elastic potential (strain) energy → thermal energy
(D) kinetic energy → gravitational potential energy → thermal energy

▶️Answer/Explanation

Ans : B

Question 33:-

Subtopic: P2.1.1 States of matter

Which term describes a gas changing into a liquid?
(A) boiling
(B) condensation
(C) evaporation
(D) melting

▶️Answer/Explanation

Ans : B

Question 34:-

Subtopic: P3.4 Sound

A man stands 420 m away from a high wall. He bangs a drum once and starts a stop-watch at the
same time. When he hears an echo from the wall, the stop-watch reads 2.4 s.
What is the speed of sound, calculated from this information?
(A)  87.5 m / s     (B)  175 m / s     (C)  330 m / s     (D)  350 m / s

▶️Answer/Explanation

Ans : D

Question 35:-

Subtopic: P3.2.1 Reflection of light

A student stands in front of a plane mirror on a wall.
Which statement about the image of the student is not correct?
(A) The image is laterally inverted (left to right).
(B) The image is smaller than the student.
(C) The image is upright.
(D) The student and the image are equal distances from the mirror.

▶️Answer/Explanatio

Ans : B

Question 36:-

Subtopic: P4.2.1 Electrical charge

 Two insulators are charged by rubbing them with a cloth.
After this, the charged insulators repel each other.
Which statement is a possible description of how the insulators become charged?
(A) One gained electrons and the other gained protons.
(B) One gained electrons and the other lost electrons.
(C) They both lost electrons.
(D) They both lost protons.

▶️Answer/Explanation

Ans : C

Question 37:-

Subtopic: P4.2.2 Electric current

A battery of e.m.f. V is connected across a resistor of resistance R. There is a current in the
resistor.

Which row shows two changes that both increase the current in the resistor?

▶️Answer/Explanation

Ans : C

Question 38:-

Subtopic: P4.4 Electrical safety

Fuses are used in domestic electric circuits.
Which statement about fuses is correct?
(A) A fuse is connected in the live wire.
(B) A fuse is connected in the neutral wire.
(C) A 3.0A fuse produces a current of exactly 3.0A in the circuit.
(D) A 3.0A fuse produces a minimum current of 3.0A in the circuit.

▶️Answer/Explanation

Ans : A

Question 39:-

Subtopic: P4.5.3 Magnetic effect of current

A straight wire carries a current into the page.
Which diagram shows the pattern and direction of the magnetic field around the wire due to the
current?

▶️Answer/Explanation

Ans : A

Question 40:-

Subtopic: P5.2.4 Half-life

A radioactive isotope has a half-life of 3.0 days. A sample contains 4000 atoms of this isotope.
How many atoms of the isotope remain after 6.0 days?
(A)  0     (B)  500     (C)  1000     (D)  2000

▶️Answer/Explanation

Ans : C

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