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Exam - Physics and astronomy – CATEGORY 1 Grades 7-8

1 / 30

Arrange the following planets in increasing order of time required to complete one revolution around Sun.

(i) Earth       (ii) Uranus       (iii) Mars      (iv) Jupiter

 

2 / 30

A plane mirror is inclined at 40oto the floor. An incident ray parallel to the floor strikes the mirror and a reflected ray is formed. What is the angle of reflection?

3 / 30

The hearing range of human ear is

4 / 30

Nichrome is an alloy of:

5 / 30

A simple pendulum takes 42 sec. to complete 20 oscillations. What is its time period?

6 / 30

What is the name of a cloud of dust and gas held together by gravity?

7 / 30

Loudness of sound is determined by

8 / 30

Which phase of the Moon is this? The visible part of the Moon is represented by the white.

9 / 30

What type of galaxy is our Milky Way?

10 / 30

If 200 liters of orange juice is to be poured in cylindrical drum with diameter of 80cm then the depth of orange juice in drum is

11 / 30

The temperature at which no more energy can be removed from matter is called

12 / 30

The increase in area of the solid on heating is called

13 / 30

How many Kelvin are in 47.30 C?

14 / 30

Four children were asked to arrange forces due to rolling, static and sliding frictions in an increasing order. Their arrangements are given below. Choose the correct arrangement.

15 / 30

A book of mass 20 g is placed on a table. Find the thrust exerted by the book on the table. (Take acceleration due to gravity as 10 ms−2)

16 / 30

A negatively charged rod is brought close to two metal spheres which are in contact with each other and the spheres are separated in the presence of the rod. Then :

17 / 30

Which of the following mechanical systems will produce the maximum amount of heat because of friction?

18 / 30

Which of the following cannot be used for measurement of time?

19 / 30

If we apply oil on door hinges, the friction will

20 / 30

The velocity of sound at 20°C is approximately

21 / 30

The ball was moving at a constant speed and the images were taken at a constant rate of 10 per second. What is the speed of the ball?

22 / 30

Wind currents are generated due to:

23 / 30

How much of the galaxy can you see in the night sky?

24 / 30

Which object has such a strong surface gravity that light cannot escape it?

25 / 30

In the given velocity-time graph, AB shows that the body has

26 / 30

A car designer designed four cars labelled as I, II, III, and IV. The shapes of the cars are shown in given figure. On a test drive, these cars are moving with the same speed on a highway. The tank of each car is filled with the same quantity of fuel.

In covering equal distances, least fuel is consumed by car

27 / 30

The given figure shows a circuit which contains two identical lamps. When the switch is closed, which of the following statements best describes, what happened to lamps P and Q?

28 / 30

The Halley’s Comet is seen after every

29 / 30

Jennet and Michael measured their body temperature. Jennet found her’s to be 98.6°F and Michael recorded 37°C. Which of the following statement is true?

30 / 30

Two boys A and B are applying force on a block. If the block moves towards the boy A, which one of the following statements is correct?

Your score is

/30

Exam - Physics and astronomy – CATEGORY 2 Grades 9-10

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In the given figure, distance [d] between conductors carrying currents I1 and I2 is varied. Which of the following graphs correctly represents the variation of force (F) between the conductors and distance [d]?

2 / 30

Four optical media A, B, C and D have optical densities 1.35, 1.21, 1.58 and 1.002 respectively. In which optical medium will the light travel fastest?

3 / 30

SI unit of specific energy is

4 / 30

A metal sphere of mass 12 kg has the same diameter as another sphere of mass 4 kg. Both spheres are dropped simultaneously from a tower. When they are 8 m above the ground, they have the same _________.
(Neglect air resistance.)

5 / 30

If a force F is applied on a body and it moves with a velocity V, the power will be

6 / 30

Identify the given biogeochemical cycle

7 / 30

What is the name of the region beyond Neptune's orbit where icy bodies lie?

8 / 30

The mass of a planet is 6 × 1024 kg and its diameter is 12.8 × 103 km. If the value of gravitational constant be 6.7 × 10-11 Nm2/kg2, calculate the value of acceleration due to gravity on the surface of the planet. What planet could this be?

9 / 30

Which of the following is an abiotic component of the environment?

10 / 30

The figure given alongside shows the image of a clock as seen in a plane mirror. The correct time is:

11 / 30

An object is dropped from certain height. Which of the following statements is correct about the object when it is about to reach the ground?

12 / 30

The freezing and boiling points of a substance ‘P’ are –220°C and –185°C respectively. At which of the following range of temperatures will ‘P’ exist as a liquid?

13 / 30

A low mass star will end its life as which of the following?

14 / 30

What were the first elements made after the Big Bang?

15 / 30

The work done in holding 15 kg suitcase while waiting for a bus for 15 minutes is

16 / 30

What kind of energy is present in a rotating wheel?

17 / 30

The resistance of a wire of length 300 m and cross-section area 1.0 mm2 made of material of resistivity 1.0 × 10–7 Ωm is:

18 / 30

An electric dipole placed in a non-uniform electric field experience:

19 / 30

How long ago did the Big Bang happen?

20 / 30

A body travels 2 m in the first two second and 2.20 m in the next 4 second with uniform deceleration. The velocity of the body at the end of 9 second is

21 / 30

A hammer exerts a force of 1.5 N on each of the two nails A and B. The area of cross section of tip of nail A is 2 mm2 while that of nail B is 6 mm2. Calculate pressure on each nail in pascal.

22 / 30

Velocity time curve for a body projected vertically upwards is

23 / 30

What happens to the inertia of an object when its velocity is doubled?

24 / 30

The force experienced by a current-carrying conductor placed in a magnetic field is the largest when the angle between the conductor and the magnetic field is:

25 / 30

An iron ball and a wooden ball of the same radius are released from a height H in vacuum. The times taken by both of them of reach the ground are

26 / 30

If the kinetic energy of a body of mass 2 kg is 25 J. Its speed is

27 / 30

The time when day and night everywhere on earth are approximately equal length is known as what?

28 / 30

The position versus time graph of a particle in a wave is shown in the given figure.

The parameter of the wave denoted by ‘a’ is known as its

29 / 30

A car has travelled a distance s, from its starting point on a trip is shown in the table below as a function of time t, since the trip started.

What is the average velocity between t=1h and t = 3 h?

30 / 30

What is the equivalent resistance between points A and B in the given circuit diagram?

Your score is

/30

Exam - Physics and astronomy – CATEGORY 3 Grades 11-12

1 / 30

An observer is standing stationary in air moving at a speed of 2m/s. A source of frequency 20Hz is moving in the direction of wind with speed 10m/s towards the observer. What will be the frequency as heard by the observer? Speed of sound in air is 330m/s.

2 / 30

Name one of the following parallels of latitudes as Tropic of Cancer.

3 / 30

A person is standing in an elevator. In which situation he finds his weight less

4 / 30

A body has 15J of heat energy in a particular state. At the same state it has an internal energy of 30J. Assume no work is done, what will happen to the internal energy if 5J of heat is added to the system?

5 / 30

Which of the following is not true of gases, as compared to liquids or solids?

6 / 30

Who proposed the heliocentric model of the solar system?

7 / 30

For maximum power from battery the internal resistance of battery r is:

8 / 30

A source of sound moves towards an observer. What happens to the speed of sound in the medium?

9 / 30

Moment of inertia, of a spinning body about an axis, doesn’t depend on which of the following factors?

10 / 30

An aeroplane flying 490 m above ground level at 100 m/s, releases a block. How far on the ground will it strike?

11 / 30

What is a necessary condition for a reaction to be spontaneous at all temperatures?

12 / 30

If the K.E of a body is increased by 300% its momentum will increase by

13 / 30

What is the frequency of an electromagnetic wave with a wavelength of 1.0×105 m?

14 / 30

What is the gravitational force experienced by an object of 10kg 200m away from an object weighing 1 ton?

15 / 30

Two particles of equal masses are revolving in circular paths of radii r1 and r2 respectively with the same speed. The ratio of their centripetal forces is:

16 / 30

A force F is applied in a cross-sectional area as shown. The value of F is 20 N and the value of A is 2 m2. Find the pressure on the surface.

17 / 30

What is the speed of Milky Way Galaxy?

18 / 30

Which gas gives the planets shown below their color?

19 / 30

If a particle moves with constant angular velocity in a circle then during the motion its

20 / 30

A body of mass 5 kg, projected at an angle of 60° from the ground with an initial velocity of 25 m/s, acceleration due to gravity is g = 10 m/s2, what is the maximum horizontal range covered?

21 / 30

The velocity of a body depends on time according to the equation v= 40 +0.2t3. The body is undergoing

22 / 30

Find the false statement.

23 / 30

A spring of length 1m has two cars connected to both of its ends. The two cars move towards each other such that the spring is compressed to 0.5m. If the spring constant is 500 N/m, what is the elastic potential energy stored?

24 / 30

A force F is applied on a uniform rod of cross-section A and a force F’ is applied on a uniform rod of cross-section 3A. What is the relation between F and F’ if the pressure on both is the same?

25 / 30

In a vertical circle of radius r, at what point in its path does a particle have tension equal to zero, if it is just able to complete the vertical circle

26 / 30

Assuming standard notations, which of the following quantities is dimensionless?

27 / 30

A hollow sphere has a radius of 6.4 m. Minimum velocity required by a motorcyclist at the bottom to complete the circle will be

28 / 30

As shown in figure the tension in the horizontal cord is 20 N. The weight W and tension in the string OA in Newton are

 

29 / 30

Based on radiometric dating, the solar system formed about how many years ago?

30 / 30

Two blocks are connected by a cord passing over a small frictionless pulley and resting on frictionless planes as shown in the figure The acceleration of the blocks is-

Your score is

/25

Exam - Natural sciences CATEGORY 1 Grades 5-6

1 / 25

Which of the following is not an example of freshwater?

2 / 25

Which of the following can be classified as a chemical change?

  1. Grilling of meat
  2. Digestion of food

III. Chopping of wood

  1. Drying of puddle of water

3 / 25

Analyze the given diagram of the solar system below.

Which statement is true based on the given diagram?

4 / 25

Below is an image of an aquarium ecosystem.

Which is an example of a biotic component?

5 / 25

What period of ancient Egyptian history were Pyramids of Giza built?

6 / 25

What phase change is involved in the given illustration?

7 / 25

In mummification, which organ was deliberately left in the body for the afterlife?

8 / 25

Analyze the given diagrams below.

Which diagram represents a mixture?

9 / 25

In which material will light pass through completely?

 

10 / 25

Which of the following is not a conductor of electricity?

11 / 25

Analyze the given diagram of a plant cell below.

Part X contains the green pigment that is responsible for photosynthesis to take place.

What part of the plant cell is X?

12 / 25

What kind of scientist deals with the study of fossils?

13 / 25

To which galaxy does our solar system belong?

14 / 25

When someone asks: How long will it take for you to reach a certain destination?

 What motion descriptor does the person asking pertains to?

15 / 25

Which cycle best represents the diagram?

16 / 25

Study the human digestive system below.

Which two parts —A, B, C, D — have digestive juices?

17 / 25

Which state of matter has a definite shape and fixed volume?

18 / 25

Which of the following animals is considered as oviparous?

19 / 25

Study the circuit diagrams below.

In which circuits would the bulbs light up?

20 / 25

Which subatomic particle has a negative charge?

21 / 25

The crust of the Earth is divided into enormous pieces known as tectonic plates. The major tectonic plates of the Earth are depicted on this map. What kind of scientist examines the tectonic plate movement on Earth?

22 / 25

Analyze the given diagram below. In which part does an earthquake originate?

23 / 25

Which animal is not a mammal?

24 / 25

Which term refers to the consumers that feed on both plants and animals?

25 / 25

Analyze the diagram below.

What happens to the particles as heat is added to the matter?

Your score is

/25

Exam - Natural sciences CATEGORY 2 Grades 7-8

1 / 25

Element X has an atomic number of 17 and mass number of 35. How many protons does it have?

 

2 / 25

In which layer of the atmosphere do meteors burn up?

3 / 25

Below is the atomic model of the element Helium.

How many protons does Helium have?

4 / 25

Which part of the cell is not present in plants?

5 / 25

Which behavior of light explains why the pencil appears to be bent in the image below?

6 / 25

Which of the following materials is not transported by the blood?

7 / 25

What is the study of everything in the universe?

8 / 25

What solar feature is highlighted in the given image of the sun below?

                   

 

9 / 25

When is a species considered extinct?

10 / 25

What is the totality of genes, species, and ecosystem of a region called?

11 / 25

Which is known as the control center of the cell?

12 / 25

The diagram below shows the law of reflection of light.

Which statement affirms this law?

13 / 25

On which continent have the most dinosaur fossils been found?

14 / 25

Which are the building blocks of proteins?

15 / 25

Which characterizes the teeth of a meat-eating dinosaur?

16 / 25

Which law of motion explains why a rolling ball will keep on rolling unless an outside force like friction stops its motion?

17 / 25

How is heat transferred in the image below?

18 / 25

The shape of the red blood cells is in discoidal form. It also has an indention in the center.

What could be the best explanation for this structure of the red blood cell?

19 / 25

What separation technique of mixture is shown in the image below?

 

20 / 25

What is used to determine past temperatures using trapped bubbles?

 

21 / 25

What could be the kinetic energy of a 0.8-kg encyclopedia sitting on top of the table?

22 / 25

What type of friction is present between the ground and the roller skates?

23 / 25

Analyze the given diagram of electromagnetic spectrum below.

Which electromagnetic wave has the highest frequency?

24 / 25

Which substances can speed up a chemical reaction?

25 / 25

In which stage of meiosis do synapsis and crossing-over take place?

 

Your score is

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