CBSE science Class IX previous year question paper,G.D Lancer's Public School - Future Study Point

CBSE science Class IX previous year question paper,G.D Lancer’s Public School

GD LANCER PUBLIC SCHOOL

Class IX previous year question paper,G.D Lancer’s Public School

 

Gd lancer's public scool science question papers

G.D LANCER’S PUBLIC SCHOOL

ANNUAL EXAMINATION

CLASS –IX

SUBJECT: Science                                                                                                                                                      M.M: 80

Name                                                                                                                                                                             Time: 3Hrs


                                                 SECTION –A                                                            20 ×1=20

Q1. Underline what conditions will the magnitude of displacement be equal to the distance travelled by an object?

Q2.Write down the equation for velocity-time relation.

Q3.Name the process used by milkman to separate cream from milk.

Q4.Name the element with atomic number 12.

Q5.Name the air-borne disease.

Q6.Name the cell organelle which has its own DNA and ribosomes.

Q7.When ice melts, the cooling is produced because:

a) density of ice is less than water.

b) Ice floats on water.

c) melting point of ice is 0⁰C.

d) Ice absorbs heat from the surroundings.

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Q8.When stained appropriately the muscle which shows alternate light and dark bands is:

a) Striated       b) Smooth      c) Cardiac      d) Unstriated

Q9. A student took some dilute sulphuric acid in a conical flask and added some pieces of metal into it. He observed bubbles of colourless and odourless gas. This gas is:

a) Oxygen    b) Hydrogen sulphide    c) Hydrogen    d) Sulphur dioxide

Q10.A man is standing on a boat in still water. If he walks towards the shore, the boat will:

a) Move away from the shore                                       b) move towards the shore

c) Remain stationary                                                      d) Sink

Q11.Sachin was asked to separate a mixture of common salt and ammonium chloride. Identify the process used by Sachin:

a) Sedimentation                                      b) Sublimation

c) Distillation                                             d) Crystallization

 

Q12.Carbohydrates are stored in plants in the form of :

a) Sucrose                                                b) Starch

c) Glycogen                                              d) Crystallization

Q13.Sound will not travel through:

a) Solid                                                       c)Liquid

b) Gas                                                        d)Vacuum

Q14.The acceleration of a car that speeds up from 12 m/s to 30 m/s in 15s is:

a)4 m/s2                                                     c)1.2 m/s2

b) 2 m/s2                                                    d) 5 m/s2

Q15.Tyndall effect can be observed easily in which type of solutions.

a) True solution

b)Colloidal solution

c) Suspension

d)Both (b) and (c)

Q16.To which group does Agaricus belong:

a) Algae                                                           c) Fungi

b) Bryophyta                                                  d) Porifera

Q17.Which of the following organelles is not present in the cheek cell?

a) Ribosomes

b) Mitochondria

c) Chloroplast

d) Nucleus

Q18.Which of the following mixture is unstable:

a) Water +Sugar                                           c) Water + Sand

b) Water + Salt                                              d) Water + Copper sulphate

ASSERTION and REASON (QNo.19 & 20)

In questions 19 and 20, a statement of assertion (A) is followed by a statement of reason

a)A is true but R is false.

b)A and R both are true and R is correct reason of A.

c)A is false but R is true

d)A and R both are true but R is not correct reason of A.

e)Both A and R are false.

Q19.Statement-You falls in forward direction when a moving bus stop suddenly.

Reason-   We fall forward due to inertia of motion of the upper part of the body.

Q20. Statement-Metals are electropositive in nature.

Reason- Metals lose electrons in order to become stable and form cations.

 

                                                                         SECTION−B          10 × 3=30

Q21.Position−time information for a cheetah is shown in the data table below. Assume that the motion is uniform, fill a,b in the blanks of the table and calculate the speed of Cheetah.

Time(S)Position(m)
00
0.512.5
1.0(a)
1.537.5
2.050.0
(b)62.5

 

Q22.Define law of conservation of momentum,Derive a mathematical expression for the same.

what-is-second-law-of-of-motion?

Q23.a) Define acceleration due to gravity.

b)At equator, a bag of sugar weighs W kgs. Will it weigh same. Or more or less? When taken to America?Give reason for your answer.

what-is-universal-law-of-gravitational-force?

Q24.Rahul and Manav each were given a mixture of iron fillings and sulphate powder. Rahul heated the mixture strongly and a new substance was formed.Write three points of difference between the two.

Q25.Explain the observations of Rutherford’s scattering experiment(diagram also).

Q26.An object of mass 100 kg is accelerated uniformly from a velocity of 5 m/s to 8 m/s in 6 second. Calculate the initial and final momentum of the object.Also find the magnitude of the force exerted on the object.

Q27.What are weeds?Write two methods of weed control.

Q28.Sulphur has atomic number 16 and mass number32. State the number of proton and neutrons present in the nucleus of sulphur. Give a simple diagram to show the arrangement of electrons in an atom of sulphur.

molar-massmolecular-mass-and-mole-concept

cbse-ix-class-science-sample-papers

Q29.Explain the direction of movement of air during the day and night in coastal areas.

Q30.Define hybridization. How is it useful for crop; variety improvement?

                                                         SECTION−C                                                                       6 × 5 =30

 

b).How much would a 70 kg astronaut weight on moon? What would be his mass on the earth and the moon?

Q32.An atom of an element’ ‘Z’ may be written as 94Z.

  1. What does the figure 4 indicate?
  2. What does the figure 9 indicate?
  3. What is the number of protons in atom Z?
  4. What is the number of neutrons in atom Z?
  5. What is the valency of atom Z?

Q33.a)When a carpet is beaten with a stick, dust comes out of it. Explain.

b)Two objects of each of mass 1.5 kg, are moving in the same straight line but in opposite direction. The velocity of each object is 2.5 m/s before the collision during which they stick together. What will be the velocity of the combined object after collision?

Q34.a)Why is it difficult to hold a school bag having a strap made of a thin and strong string?

b)The volume of a 500 g sealed packet is 360 cm3. Will it sink or not if the density of water is 1gcm-3?

What will be the mass of the water displaced by this packet?

Q35.a)Which causes more severe burns−boiling water or stream at the same temperature? Why ?

cbse-class-9-th-chemistry-extra-questions-for-sa2-exams

b)Differentiate between boiling and evaporation.

Q36.a)Give three features of cardiac muscles.

b)Draw a neat, well –labelled diagram of neuron.

Q37.What is SONAR? How is it used to detect an underwater object and measure its distance?

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