On this page we have uploaded NBSE Class 9 Question Paper for Science released by nbse.uk.gov.in. The question paper provided here from Nagaland State Board. Download the 2023 question paper pdf as well.
Nagaland State Board has published subject wise question paper for this year Class 9 students in its official portal NBSE.uk.gov.in. Here we have published Class 9 NBSE question paper 2023 for Science subject. For more information regarding Nagaland Intermediate Class 9, 2023 Exam Date, Exam Pattern, Time, Date, How to prepare follow our website.
Nagaland Board (NBSE) Class 9 Question Papers – Science Subject
(A) Choose the correct answer from the given alternatives:
(1) The chemical formula of sodium nitrate is
(i) Na2NO3
(ii) NaN3
(iii) NaNO2
(iv) NaNO3
(2) Which of the following is an example of chemical change?
(i) Freezing of water
(ii) Mixing iron and sand
(iii) Melting of butter
(iv) Rusting of iron
(3) Which of the following figures represent uniform motion of a moving car?
(4) The odometer of an automobile measures the
(i) time taken
(ii) acceleration
(iii) distance travelled
(iv) velocity
(5) The value of acceleration due to gravity ‘g’ is
(i) greater at poles
(ii) greater at equator
(iii) same on the surface of moon and earth
(iv) same at all places on surface of earth
(6) In the picture given below, who does the work?
(i) Cart
(ii) Wheel
(iii) Bullock
(iv) Road
(7) The mathematical expression for kinetic energy of an object is
(i) Ek = mv2
(ii) Ek = 1/2 mv
(iii) EK = 1/2 m2v
(iv) Ek = 1/2 mv2
(B) Answer the following questions in about 20-30 words:
(8) Why are cotton clothes preferred in summer?
(9) Write the chemical formulae of –
(i) carbon tetrachloride
(ii) aluminium chloride
(10) State the Universal law of gravitation. Write the S.I unit of universal gravitational constant.
(11) The potential energy of a free falling object decreases progressively.
(i) What happens to the kinetic energy?
(ii) What happens to the total mechanical energy?
(C) Answer the following questions in about 40-60 words:
(12) (a) Name A,B,C,D,E and F in the following diagram showing change in its state.
Or
(b) Define evaporation. Explain any two factors that affect evaporation.
(13) (i) Define molecular mass.
(ii) Calculate the molecular mass of CH3OH. (Atomic mass of Hydrogen= 1, Oxygen= 16 and Carbon= 12)
(14) Given below is a sketch diagram of a certain generalized cell.
(i) Identify whether it is a plant cell or an animal cell.
(ii) Give two reasons in support of your answer.
(15) (i) What is meant by acceleration due to gravity?
(ii) Gravitational force on the surface of the moon is only 1/6 as strong as gravitational force on the Earth. What is the weight in Newton of a 10kg object on the moon and on the earth?
(16) (a) (i) Define power.
(ii) An electric heater is rated 1500W. How much energy does it use in 10 hours? (Given, 1 hour = 60 × 60 seconds)
Or
(b) (i) Define 1 J of work.
(ii) An object of mass 15kg is moving with a uniform velocity of 4ms-1. What is the kinetic energy possessed by the object?
(D) Answer the following questions in about 70-100 words:
(17) With the help of diagrams, explain the two types of cell division.
(18) (a) A train starting from rest attains a velocity of 72 km h-1 in 5 minutes. Assuming that the acceleration is uniform,
(i) find the acceleration.
(ii) find the distance travelled by the train for attaining this velocity.
(iii) When is a body said to be in uniform acceleration?