Online Test of Chapter 5 The Fundamental unit of Life 2 Science| Class 9th
1. Centrosome is found in:
(a) Cytoplasm
(b) Nucleus
(c) Chromosomes
(d) Nucleolus
2. Function of centriole is
(a) formation of spindle fibre
(b) nucleolus formationation
(c) cell wall formation
(d) cell division initiation
3. Which of the following organelle is present onion cells but not in human cheek cells?
(a) cell wall
(b) cytoplasm
(c) nucleus
(d) plasma me
Questions :
1. In which of the following cases of motions, the distance moved and the magnitude of displacement are equal?
(a) If the car is moving on a straight road.
(b) If the car is moving in circular path.
(c) The pendulum is moving to and fro.
(d) The earth is revolving around the sun.
2. A particle is moving in a circular path of radius r, the displacement after half a circle would be:
(a) zero
(b) πr
(c) 2r
(d) 2πr
3. Slope of vel...
Questions :
1.Find the average speed of a bicycle if it completes two round of a circular track of radius 140m twice in 5min 52 sec.
(a) 10m/s
(b) 5m/s
(c) 2m/s
(d) 4m/s
2. If 's' is displacement and 'd' is distance between two points, then the correct relation is
(a) s = d
(b) s > d
(c) d > s
(d) none
3. Which of the following figures represents uniform motion of a moving object correctly?
...
Questions :
1. Which of the following statement is correct about the atom of an element?
(a) an atom can have only protons and neutrons but no electrons.
(b) an atom can have only electrons and neutrons but no protons
(c) an atom can have only electron and proton but no neutron
(d) an atom must always have a proton, neutron and electron
2. The number of valence electrons in a sulphide ion, S2-, is:
(a) 16
(b) 10
(c) 9
(d) 8
3. The isotopes o...
Questions :
1. The number of electrons in Na+ (atomic number = 11) are
(a) 11
(b) 10
(c) 12
(d) 13
2. There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16 respectively. The element which can exhibit covalency as well as electrovalency will be:
(a) -P
(b) Q
(c) R
(d) S
3. The maximum number of electron in 3rd shell can be
(a) 8
(b) 18
(c) 32
(d) 50
4. The valency of Al with atomic number 13 is
(a) 3
(b) 2...
Online test of Chapter 4 Structure of Atom 1 Science| Class 9th
Questions:
1. The four atomic species can be represented as follows. Out of these, the two species which can be termed isobars are:
(i) 201X60 (ii) 200X61 (iii) 200X58 (iv) 203X60
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (i) and (iv)
2. An element has electronic configuration 2, 6; the element is
(a) Carbon
(b) Nitrogen
(c) Oxygen
(d) Fluorine
3. The radioacti
Online test of Chapter 8 Motion 1 Science| Class 9th
Questions :
1. A man walks from point A to B through semicircular track ACB as shown in figure. What is his distance and displacement?
Radius of Semi Circular track ACB
OB = OA = r
(a) Distance = 2πr, displacement = 2πr
(b) Distance = πr, displacement = 2πr
(c) Distance = 2πr, displacement = 2r
(d) Distance = πr, displacement = 2r
2. In accelerated motion, the path of the moving particle is
(a) s
Online test of Chapter 10 Gravitation 2 Science| Class 9th
Questions:
1. The weight of a body on the earth is 120 N. The weight of the same body on the moon will be
(a) 120 N.
(b) 20 N.
(c) zero.
(d) 240 N.
2. The force acting on a ball due to the earth has a magnitude Fb and that acting on the earth due to the ball has a magnitude Fe. Then
(a) Fb = Fe
(b) Fb > Fe
(c) Fb < Fe
(d) Fe = 0
3. Two bodies A and B of masses 100 g and 200 g respectively
Online test of Chapter 10 Gravitation 3 Science| Class 9th
Questions :
1. The mass of an object is 60 kg on the earth. This object was carried to the moon. The mass of the body on the moon will be
(a) 6 kg.
(b) 60 kg.
(c) 10 kg.
(d) 360 kg.
2. The weight of a 1 kilogram mass body on the earth will be
(a) 1 N.
(b) 9.8 N.
(c) 0.
(d) 100 N.
3. What is the direction of centripetal force on an object moving with constant speed in a circular track?
(a) Toward
Online test of Chapter 10 Gravitation 1| Class 9th Science
Questions :
1. What is the centripetal force that makes moon revolve around earth?
(a) Gravitational Force
(b) Electrostatic Force
(c) Magnetic Force
(d) None
2. The mass of an object is the measure of its
(a) pressure.
(b) weight.
(c) inertia.
(d) thrust.
3. Which of the following case do not take place due to gravitational force?
(a) Earth revolution around Sun
(b) Magnet attracting Iron nails