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Science Solved Sample Paper

9th CBSE Science Annual Examination 2019-20

9th CBSE Science Annual Examination Question Paper (2019-20)

School Name: Himalaya Public School, Sector 13, Rohini, Delhi 110085 India
Time: 3 Hrs.
Marks: 80
Class: 9th
Date: 15/01/2020
Subject: Science

General Instructions:

  • All questions are compulsory.
  • The question paper comparison of three sections A, B & C.
  • Internal choice is given in section – B & C only.
  • The question paper consists of 36 question into three Section – A, B and C. Section – A comprises of 20 objective type question of 1 mark each. Section – B of 10 short answer type questions of 3 marks each. Section – C comprise of 6 long answer questions of 5 marks each.

9th Science Annual Examination: Section A

Multiple choice questions

Question: 1. Newton’s second law of motion helps to determine

  1. Magnitude of force
  2. Definition of force
  3. Magnitude of velocity
  4. Definition of velocity

Question: 2. Which of the following is non fluid?

  1. Solid
  2. Liquid
  3. Gas
  4. Plasma

Question: 3. Vectors can be defined as

  1. Diseased plants
  2. Infected person
  3. Micro – organism which cause many diseases
  4. Animals which carry the agents form diseased

Question: 4. What is the atomicity of phosphorus?

  1. 1
  2. 2
  3. 3
  4. 4

Question: 5. A decibel is a

  1. Musical instrument
  2. Musical note
  3. Measure of sound level
  4. Noise meter

Question: 6. Which group of animals use hard calcium carbonate structure as skeleton?

  1. Arthropoda
  2. Protector date
  3. Nematoda
  4. Echinodermata

Question: 7. Which of the following is a true fish?

  1. Star fish
  2. Cattle fish
  3. Jelly fish
  4. Hippo-campus

Question: 8. A model of atom similar to that of Christmas pudding was proposed by

  1. Rutherford
  2. Dalton
  3. Thomson
  4. Bohr

Question: 9. A cell was swell up if placed

  1. in – isotonic solution
  2. in hypo-tonic solution
  3. in hyper-tonic solution
  4. in concentrated sugar solution

Question: 10. A person is living is an overcrowded poorly ventilated house. He is most likely to suffer from

  1. Water Borne diseases
  2. Cancer
  3. Air borne
  4. AIDS

Fill in the blanks:

Question: 11. Xanthium and parthenium are commonly known as ______.

Question: 12. Addition of HCL to iron evolves _____ gas which burns with a _____ sound.

True / False

Question: 13. One mole of hydrogen contains 6.022 x 10²³ atom of H. (   )

Question: 14. Ultrasonic waves are also known as supersonic waves. (    )

Assertion – Reason Question

Note: Read the assertion and reason statements  and marks the correct option out of the following options.

  1. It both assertion and reason are true and reason is the explanation of the assertion.
  2. If both the assertion and reasons are true but the reason is not correct explanation of the assertion.
  3. If assertion is true but reason is false.
  4. If both assertion and reason are false.

Question: 15.

Assertion: Value of acceleration due to gravity does not depend on the mass of the objects in which force of gravity acts.

Reason: Acceleration due to gravity is same as the universal constant of gravitation.

Question: 16.

Assertion: There are six macro-nutrient while there are seven micro-nutrients.

Reason: C, H, O, N, P & K are macro-nutrients.

Question: 17. What is the SI unit of density?

Question: 18. Where is value of ‘g’ maximum and where minimum on the earth’s surface?

Question: 19. Name two plants which is used as bio pesticide in organic farming.

Question: 20. Define one Kilowatt hour.

9th CBSE Science Annual Examination 2019-20: Section B

Question: 21.

What management practices are common in dairy and poultry farming?

OR

What are the desirable characters of bee varieties suitable for honey production?

Question: 22.

  1. What do you mean by free fall?
  2. Write the equations of free fall.

Question: 23.

  1. Define uniform acceleration. What is the acceleration of a baby moving with uniform velocity?
  2. A particle move over three quarters of a circle of radius r what is the magnitude of its Displacement.

OR

  1. A train starting from rest moves with uniform acceleration of 5 mts². Find its velocity when it has traveled a distance of 1 Km.
  2. Give one difference between Distance and displacement.

Question: 24.

  1. Give one examples for each of the following
    (i) A cute disease     (ii) Chronic disease
  2. Differentiate between infectious and non infectious diseases.

Question: 25.

Give one word answer of the following.

  1. Organelle containing chlorophyll
  2. Living matter of the cell
  3. Cell without membrane bound nucleus

OR

Identify the type of tissue in the following.
Skin, Bark of True, Bone, Living of Kidney Tubule, Vascular bundle

Question: 26.

  1. Draw a neat diagram of a Hydra
  2. Name the group of animals it belong to
  3. Name one species of this group which lives in colonies.

Question: 27.

  1. Write the full form of IUPAC.
  2. Hydrogen and oxygen combine in the ration of 1 : 8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas.

Question: 28. Calculator the molecular mass for each one of them

  1. KOH
  2. CaCO3
  3. NaOH

OR

Which has more number of atoms?

100 g of N2 or 100 g of NH3.

Question: 29.

  1. Explain Bohr and Burry rules for distribution of electrons into different shells.
  2. Draw the electronic structure of elements X with atomic number 17 and element Y with atomic number 16?

Question: 30. Classify each of the following as a physical or a chemical change. Give reasons.

  1. Drying of ‘shirt in the sun’
  2. Churning of milk cream to get butter
  3. Burning of Kerosene in a lantern

9th Science Annual Examination: Section C

Question: 31.

  1. What is meant by buoyancy? Why does an object float or sink when placed on the surface of a liquid?
  2. Describe a simple activity to prove that objects of density less than of the liquid float on it.
  3. Name the force acting on a body when  it is fully or partially immersed in a liquid

Question: 32.

  1. Define work. Write its SI unit.
  2. What is commercial unit of energy? It is equal to how many joules?
  3. An electric oven is rated 2500 W. How much units of energy does it use in 4 hours?

OR

  1. Derive an expression to calculate the potential energy of a body.
  2. Name the type of energy possessed by a raised hammer
  3. An object of mass 5 kg is dropped from a height of 10 m. Find its kinetic energy when it is half way down.

Question: 33.

  1. How is the valency of an atom related to its electronic configuration.
  2. Write the electronic configuration of the elements whose atomic numbers are 7, 17 and 19 respectively.
  3. What is the similarity in the electronic structure of the following set of atoms
    (i) Lithium
    (ii) Sodium
    (iii) Potassium

Question: 34.

  1. What do you understand by nomenclature? Who introduced this system?
  2. What is haemocoel? Which group of animals have haemocoel?
  3. Some reptiles live in water and yet lay eggs with tough covering unlike the amphibian why?

OR
Explain giving reason.

  1. Balanced diet is necessary for maintaining healthy body.
  2. Heath of an organism depends upon the surrounding environmental condition.
  3. Our surrounding area should be free of stagnant water.
  4. Social harmony and good economic condition are necessary for good health.
  5. Acute Disease do not harm any organ where as chronic diseases do.

Question: 35.

  1. Describe any three ways in which water is important for the activities of living things.
  2. Draw a labelled diagram to show water cycle in nature.
  3. What are the consequences of Global warning?

Question: 36.

  1. State the universal law of gravitation.
  2. What is the importance of this law in understanding the nature?
  3. Mass of an object is 20 Kg. Find its weight on the earth. What will be its weight when measured on the surface of the moon?

OR

  1. Identify in the situations given below where the objects making a uniform circular motion.
    (i) A car turning around a curve with uniform speed of a car going up hill.
    (ii) Motion given to a discuss by an athlete before releasing it or motion of discuss when athlete release it.
  2. A cyclist complete 5 rounds of a circular track of radius 21 m in 12 min. Calculate his speed.
  3. An artificial satellite moves around the earth with a velocity of constant magnitude. Still its motion is said to be an accelerated motion why?

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