PHYSICS For All SAMPLE PAPER Class XI/A levels (May carry MCQs/Short Qs/long Qs.) Marks 25 Choose the right option in each case by encircling the option. Q1. Vernier calipers are shown with the jaws closed.

What is the zero error? A 0.04 cm B 0.05 cm C 0.14 cm D 0.15 cm

Q2. Which list contains only scalar quantities? A acceleration, displacement, velocity B distance, force, speed C force, length, time D length, mass, speed Q3. A small stone is dropped from the top of a ladder, falls and hits the ground. It does not rebound. Which speed-time graph is correct?

Q4. A car travels along a road. The driver stops the car by pushing his foot down on the brake pedal. What does not change if he pushes harder on the brake pedal? A the braking distance B the braking force C the stopping distance D the thinking distance

2

Q5. A person of weight 600 N at the bottom of a mountain climbs to the top. The gravitational field strength changes from 10.00 N / kg at the bottom to 9.97 N / kg at the top. His mass is unchanged as he climbs. What are his mass and his weight at the top of the mountain?

Q6. A box has an internal volume of 1000 cm3 . When a solid object is placed in the closed box, the volume of air in the box is 520 cm3 . The density of the object is 8.00 g / cm3.

What is the mass of the object? A 60.0 g B 3840 g C 4160 g D 8000 g Q7. What affects the stability of an object?

A only its base area B only its base area and the location of its centre of mass C only its weight and its base area D only the location of its centre of mass

Q8. A uniform metre rule is balanced by a 4 N weight as shown in the diagram.

What is the weight W of the metre rule? A 1 N B 4 N C 16 N D 40 N Q9. An engineer designs a dam wall for a reservoir. Which factor determines the pressure at X? A the depth of the water in the reservoir B the surface area of the reservoir C the length of the reservoir D the thickness of the dam wall

3

Q10. The diagram shows a curved track. A ball is released from the position shown. At which point does the ball have the maximum gravitational potential energy?

Q11. When one radium nucleus decays, its mass decreases by 8.8 × 10-30 kg. How much energy is equivalent to this loss in mass? (speed of light c = 3.0 × 108 m/s) A 6.8 × 10–42 J B 2.6 × 10–21 J C 4.0 × 10–13 J D7.9 × 10–13 J Q12. A liquid evaporates rapidly. Why does this cause it to cool? A Air molecules remove heat by contact with the liquid surface. B Energy is lost by convection currents. C Some of the most energetic molecules leave the liquid. D The molecules have less room to move around. Q13. The tubes inside solar heating panels use the Sun’s radiation to warm water. Why are the tubes painted black? A Black surfaces absorb radiation well. B Black surfaces conduct heat well. C Black surfaces emit radiation well. D Black surfaces reflect radiation well. Q14. A hot liquid is poured into a beaker. The graph shows how its temperature changes as it cools towards room temperature.

Which processes are taking place at region X? A boiling and evaporation B condensation only C evaporation only D solidification and evaporation

4

Q15. In an experiment using a ripple tank, plane wave fronts arrive at a plane surface.

Which row correctly describes the waves after they are reflected from the surface?

Q16. A ray of light strikes the surface of a glass block at an angle of incidence of 45°. The refractive index of the glass is 1.5. What is the angle of refraction inside the block? A 28° B 30° C 45° D 67° Q17. An object is viewed through a concave (diverging) lens. What is the correct description of the image formed? A real, inverted, magnified B real, upright, diminished C virtual, inverted, magnified D virtual, upright, diminished Q18. Which pair of emissions travels with the same speed in air? A alpha-particles and gamma-rays B gamma-rays and infra-red waves C infra-red waves and sound waves D sound waves and alpha-particles Q19. During a thunderstorm, there is an interval of 1.70 s between an observer seeing the lightning and hearing the thunder. The speed of sound is 340 m / s. What is the distance between the observer and the storm? A 100 m B 200 m C 578 m D 1160 m Q20. A battery is used to light a 24 W electric lamp. The battery provides a charge of 120 C in 60 s. What is the potential difference across the lamp? A 5 V B 12 V C 24 V D 120 V

5

Q21. When three identical resistors are connected in series, their combined resistance is 6 Ω.

What is their combined resistance when they are connected in parallel? A 1/6 Ω B 2/3 Ω C 3/2 Ω D 6 Ω Q22. Two parallel vertical wires P and Q are a small distance apart in air. There is a downwards electric current in both wires. A force acts on Q owing to the current in P. This force is perpendicular to the wire Q. What is the direction of the force on Q? Q23. What does not alter the size of the turning effect on the coil of an electric motor? A the direction of the current in the coil B the number of turns in the coil C the size of the current in the coil D the strength of the magnetic field Q24. Electric power cables transmit electrical energy over large distances using a high voltage, alternating current. What are the advantages of using a high voltage and of using an alternating current?

advantage of using a high voltage advantage of using an alternating current

A

B

C

D

a higher current is produced in the

cable a higher current is produced in

the cable less energy is wasted in the

cable

less energy is wasted in the cable

the resistance of the cable is reduced

the voltage can be changed using a transformer

the resistance of the cable is reduced

the voltage can be changed using a transformer

6

Q25. The table shows details of two samples of radioactive nuclides X and Y.

After how many days will the number of atoms of nuclide X be equal to the number of atoms of nuclide Y? A 2 days B 4 days C 6 days D 8 days

***************

nuclide

number of radioactive atoms at time = 0

half-life

X

Y

16 000

2 000

1 day

2 days

7

CHEMISTRY For All Total Marks 25

Choose the right option in each case by encircling the option.

1. 2. 3. 4.

8

5. 6. 7. 8. 9.

9

12

10. 11. 12. 13. 14. 15.

10

16. 17. 18. 19. 20.

11

21. 22. 23. 24. 25.

12

Mathematics for XI Pre Eng & A levels Total Marks 25

Choose the right option in each case by encircling the option.

1. ∆ABC and ∆BDE are two equilateral triangles such that D is the mid-point of BC. The ratio of the area of triangles ABC and BDE is………

A. 2 : 1 B. 1 : 2 C. 4 : 1 D. 1 : 4

2. If the median of the data: 6, 7, x-2, x, 17, 20 written in ascending order is 16. Then x = ……….. A. 15 B. 16 C. 17 D. 18

3. If the mean of the following distribution is 2.6, then the value of y is……

A. 3 B. 8 C. 13 D. 24

4. If a wire is bent into the shape of a square, then the area of the square is 81𝑐𝑚2. When the same wire is bent into a circular shape, then the radius of the circle will be………

A. 36 𝑐𝑚 B. 81 𝑐𝑚 C. 58

11 𝑐𝑚 D. None of these

5. In the figure, if tangents PA and PB are drawn to a circle such that angle APB=30˚ and chord AC is drawn parallel to the tangent PB, then angle ABC=…….. A. 30˚ B. 60˚

C. 90˚ D. None of these

6. In the figure, if PQR is the tangent to a circle at Q whose centre is O, AB is a chord parallel to PR and angle BQR=70˚, then angle AQB is equal to……. A. 20˚ B. 35˚ C. 40˚ D. 45˚ 7. The length of altitude of an equilateral triangle of side 8cm is;

A. √3 cm B. 2√3 cm

C. 3√3 cm D. 4√3 cm

8. The points A (9, 0), B (9, 6), C (–9, 6) and D (–9, 0) are the vertices of a

A. Square B. Rectangle C. Rhombus D. Trapezium

13

9. What is the slope of the line shown?

A. -2 B. ½

C. 1 D. 2

10. Which of the following lines is parallel to the line 𝑥 − 5𝑦 = 8 ?

A. 𝑥 + 5𝑦 = 8 B. 5𝑥 − 𝑦 = 8 C. 2𝑥 + 10𝑦 = 8 D. 2𝑥 − 10𝑦 = 8

11. If 𝑡𝑎𝑛𝜃 =5

12, 0° < 𝜃 < 90°, 𝑡ℎ𝑒𝑛 𝑐𝑜𝑠𝜃 = … … … … … … ..

A. 5

13 𝐵.

12

13 C.

13

5 D.

13

12

12. The sum of a number and 6 is 8 more than twice the number. Find the equation that could be used to find this number x.

A. x + 6 = 2x + 8 B. x + 6 = x2 + 8 C. x + 6 = 2(x + 8) D. 6x = 2x + 8

13. Given an isosceles triangle with base length 32 cm and altitude 12 cm, find the length of the

congruent sides.

𝐴. 24 𝑐𝑚 B. 22 𝑐𝑚 C. 20 𝑐𝑚 D. 18 𝑐𝑚

14. The degree of the polynomial (x + 1)(x2 – x – x4 +1) is:

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

15. Given that 𝑥 is 40% of 𝑦. Then value of 𝑥

3𝑦 is;

A. 3

5 B.

4

15 C.

2

15 D.

5

3

16. When 𝑥 = 16 and 𝑦 = 9 then the value of expression 2(𝑥 + 𝑦)1/2 + 𝑥3/4 – 𝑦-1/2 will be,

A. 15 B. 172

3 C. 18

1

3 D. None of these

17. Which of the following sets of lengths (in cm) can form a triangle?

A. 2, 3, 5 B. 5, 6, 9 C. 4, 3, 8 D. 17, 5, 9

18. If 35 is removed from the data, 30, 34, 35, 36, 37, 38, 39, 40 then the median increases by:

A. 2 B. 1.5 C. 1 D. 0.5

14

19. A rope is cut into two pieces in the ratio 2 : 3. If the longer piece is 9.6 cm then the length of

shorter will be;

A. 3.6cm B. 3.2cm

C. 6.6cm D. 6.4cm

20. The given rectangle has a perimeter of (6x +2)cm and length of (2x + 3)cm. What will be the

width AD?

A. (2x + 2)cm B. (x + 2)cm C. (x – 2)cm D. (x + 3)cm

21. The point of concurrency of right bisectors of a right triangle lies;

A. Inside the triangle B. Outside the triangle

C. Anywhere on the hypotenuse D. At the mid-point of hypotenuse

22. The triangle ABC with given vertices as A(0, 1), B(-1, 0) and C(1, 0). Then the triangle is;

A. Isosceles B. Scalene C. Equilateral D. Right triangle

23. The medians of a triangle cut each other in the ratio;

A. 1 : 2 B. 1 : 1 C. 1 : 3 D. 4 : 1

24. x = 0 is a part of the solution set of the in-equality;

A. x > 0 B. 3x + 5 < 0 C. x + 2 < 0 D. x – 2 < 0

25. The given figure is a rectangle with two semicircles of same radii at the ends. The

measurements are given in the figure. What is the perimeter of the figure?

A. 214cm B. 244cm C. 288cm D. 228cm

**************

2x + 3

100m

114m

15

BIOLOGY for XI Pre Med & A levels Total Marks 25 Choose the right option in each case by encircling the option.

1. The diagram represents enzyme action.

2. The diagram represents the shape of an enzyme molecule. With which

substrate would this enzyme most easily form an enzyme-substrate

complex?

3. The diagram shows the action of amylase.

What is the function of the enzyme amylase?

A breaks down the substrate into amino acids

B changes the product into the substrate

C increases the rate of starch breaking down into glucose

D increases the rate of starch breaking down into maltose

16

4. Which pathway is taken by energy from the Sun?

5. The diagram shows a section through a leaf. Which cell type absorbs the most carbon dioxide

during the day?

6. The diagram shows the human alimentary canal. In which structure is most glucose absorbed

into the blood?

17

7. The diagram shows a large food molecule changing into smaller molecules. What is process

X?

A. absorption B. chewing C. digestion D. secretion

8. The diagram shows part of the alimentary canal and associated organs.

Which structures secrete enzymes that digest proteins?

A. T and U B. U and V

C. V and W D. W and T

9. The table shows the main contents of four meals. Which meal will be more effective at

preventing constipation?

10. In which order does water pass through the cells of a plant, as the water travels from the roots

to a leaf?

11. The diagram shows a cross-section through a plant root.

Q shows the part that is stained red when the root is placed

in water containing a red dye. What is found at Q?

A guard cells

B palisade cells

C phloem

D xylem

18

12. The diagram shows the human heart and some of the blood vessels connected to it.

Before blood in W reaches Z it must

A gain glucose.

B give up heat to the skin.

C pass through capillaries.

D travel to the head.

13. Which row shows the chambers of the heart, from those with the thickest walls to those with

the thinnest walls?

14. The diagram shows some of the structures in a human lung. Where is the carbon dioxide

concentration highest?

15. The diagram shows part of the nitrogen cycle. At which stage is denitrification occurring?

19

16. The diagram shows some structures in the human neck and thorax. The lining of tube Q has

cilia. What is an important function of the cilia?

A to help in the exchange of gases

B to increase the internal surface area of tube Q

C to moisten the air entering and leaving the lungs

D to move mucus towards the throat

17. Four metabolic reactions are shown.

18. The diagram represents a simple reflex arc.

What is the sequence of nerve cells through which an impulse passes during a reflex action?

20

19. The diagram shows a neuron.

Which structures could be found at X and Y?

20. The diagram shows a section through an eye. Which structure controls how much light enters

the pupil?

21. A person eats a large bowl of rice.

What happens to the amounts of insulin, glucagon and glycogen in their body?

21

22. The diagram shows muscles and bones in a person’s arm. What happens to the muscles as

the weight is lowered?

23. The diagram represents processes in sexual reproduction.

Which processes are represented by stages Q and R?

24. The diagram shows a cross between heterozygous tall pea plants.

Which statement is not correct?

A Offspring E and H are both homozygous.

B Offspring F and G are both heterozygous.

C The phenotypes of offspring E, F and G are the same.

D The ratio of different phenotypes in the offspring is 1 : 1

25. The diagram represents the carbon cycle. Which process is represented by arrow X?

A combustion

B feeding

C photosynthesis

D respiration

22

ENGLISH for XI Pre Med & Pre Eng Total Marks 25 Q.1 Write an essay on any ONE of the following topics: [15]

COVID 19 an emerging biological problem

OR

Stress and its effects on young people today

Topic : ……………………………………………………………….................................

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

…………………………………………………………………………………………………………………….

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

…………………………………………………………………………………………………………………….

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

23

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

…………………………………………………………………………………………………………………….

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

…………………………………………………………………………………………………………………….

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

……………………………………………………………………………………………………………………

…………………………………………………………………………………………………………………….

24

Q.2 Read the passage carefully and answer the questions that follow. [10]

Walls and wall building have played a very important role in Chinese culture. These people, from the

dim mists of prehistory have been wall-conscious; from the Neolithic period – when ramparts of

pounded earth were used - to the Communist Revolution, walls were an essential part of any village.

It is indeed a common mistake to perceive the Great Wall as a single architectural structure, and it

would also be erroneous to assume that it was built during a single dynasty. The role that the Great

Wall played in the growth of Chinese economy was an important one. Throughout the centuries many

settlements were established along the new border. The garrison troops were instructed to reclaim

wasteland and to plant crops on it, roads and canals were built, to mention just a few of the works

carried out. All these undertakings greatly helped to increase the country’s trade and cultural

exchanges with many remote areas and also with the southern, central and western parts of Asia –

the formation of the Silk Route.

i) What is the importance of the walls to Chinese?

Ans:………………………………………………………………………………………...…..…………………

…………………………………………………………………………………………………………………….

ii) Describe the wrong perception of the people about the Great Wall.

Ans: ………………………………….…….………………………………………………….………………….

…………………………………………………..……...…………………………………………………………

…………………………………………………………….…………………………………….………………..

iii) How has the Great Wall contributed towards Chinese economy?

Ans: ……………………………………………………………………………….……………..……………….

……………………………………………………………………………………………………...……………..

iv) What advantage has the Great Wall given to the Chinese?

Ans: ……………………………………………………………………………...……………………………….

……………………………………………………………………………………...……………………………..

v) Can we use border walls for our benefit? Give one advantage or disadvantage of this.

Ans: ………………………………………………………..…………...……………………………………….

……………………………………………………………………………………………………………………

………………………………………………………………………..…...……………………………………..

******************