Question bank

Chapter-9   Reproduction in Animals
Q-1 Fill in the blanks :
(a) The process by which plants and animals make new organisms like themselves is called __________________ .
(b) Division of a parent cell into two new identical cells is called ___________________ .
(c) The cells involved in sexual reproduction are called ___________________ .
(d) The fusion of a male gamete with a female gamete to form a is called ____________________ .
(c) Fertilization may be ____________ or _______________ .
Q-2 True or False:
(a) Amoeba is produced by budding.
(b) Zygote is formed by the fusion of a male gamete and female gamete.
(c) Oviparous animals lay eggs and do not deliver babies.
(d) During metamorphosis, the first stage is the egg.
(e) Fertilization is the fusion of a sperm with an ovum.
Multiple Choice Questions
Q-1 Which of the following reproduces asexually?

(i)

Humans

(ii)

Lions

(iii)

Starfish
Q-2 What is the process of fusion of the sperm and the ovum called?

(i)

Nucleus

(ii)

Zygote

(iii)

Fertilization
Q-3 The number of nuclei present in zygote is :

(i)

none

(ii)

one

(iii)

two
Q-4 It is a long and thick muscular organ.

(i)

penis

(ii)

zygote

(iii)

both a. and b.
Q-5 Male gametes are produced in :

(i)

penis

(ii)

testes

(iii)

urethra
Q-6 The female organ where the embryo develops is :

(i)

urethra

(ii)

fallopian tube

(iii)

uterus
Q-7 Where does the fertilization occur in human beings ?

(i)

Vagina

(ii)

Ovary

(iii)

Oviduct
Chapter-10   Reaching The Age of Adolescense
Q-1 Fill in the blanks :
(a) Pituitary gland makes _________________ hormones.
(b) Thyroxine is made by ______________ gland.
(c) Testosterone is made by ____________ and __________________ is made by ovaries.
(d) Puberty is the ________________ of adolescence.
(e) The first menstrual outflow in a female is called __________________ .
(f) Release of a mature egg in Fallopian tube is called _________________ .
Q-2 True or False:
(a) Split-second changes are made in our body by the glands of the endocrine system.
(b) Puberty is the stage in which the sex hormones begin to be produced.
(c) Adolescent girls face changes such as broadening of their shoulders.
(d) Women have two chromosomes XY.
(e) A combination of X and Y chromosomes produces a male baby.
Multiple Choice Questions
Q-1 Which among the following is not an example of secondary sexual character?

(i)

Increase in height

(ii)

Development of voice box

(iii)

Development of mammary glands
Q-2 The end of menstrual cycle in the human female is referred to as:

(i)

reproductive phase

(ii)

menarche

(iii)

menopause
Q-3 Sex of organisms can be controlled by factors.

(i)

physical

(ii)

environmental

(iii)

genetic and environmental
Q-4 Which of the following is a hormone secreted by the master gland?

(i)

Insulin

(ii)

Growth hormone

(iii)

Thyroxine
Q-5 The release of ovum from the ovary is called:

(i)

ovulation

(ii)

menstruation

(iii)

reproduction
Chapter-11   Force, Friction and Pressure
Q-1 Fill in the blanks :
(a) The atmospheric pressure _________________ as we move to higher altitudes.
(b) To ______________ friction it is important to oil the moving parts or machines.
(c) The unit of force is _____________ .
(d) Magnetic force is ________________ a force
(e) A ________________ force change the speed of moving body.
Q-2 True or False:
(a) A simple barometer consists of a U-tube.
(b) Force brings about changes in various factors such as shape, motion or direction of an object.
(c) Pushing or pulling a body means applying force on it.
(d) Streamlined shape is used for reducing frictional force.
(e) Though frictional force is an extremely important phenomenon it is possible to carry on with most of our work without it.
Multiple Choice Questions
Q-1 Force is used in our day to day life:

(i)

Occasionally

(ii)

Hardly

(iii)

At every step
Q-2 Which of the following effects of force is not seen in the game of cricket?

(i)

Change of direction

(ii)

Change of size

(iii)

Change of state from motion to rest
Q-3 Which of the following forces will not come into play while shifting a table from one end of a room to another?

(i)

Electrostatic force

(ii)

Frictional force

(iii)

Pushing force
Q-4 How does frictional force affect the speed of a body ?

(i)

It reduces the speed

(ii)

It increases the speed

(iii)

It has no effect on the speed
Q-5 Which of the following is a contact force?

(i)

Gravitational force

(ii)

Frictional force

(iii)

Magnetic force
Q-6 Which unit would you use to measure force?

(i)

Kilogram

(ii)

Newton

(iii)

Gram
Chapter-12   Sound
Q-1 Fill in the blanks :
(a) The number of vibrations completed in one second is known as __________________ .
(b) Sound needs a ___________________ medium for propagation.
(c) Time taken by an object to complete one oscillation is called ___________________ .
(d) The unit of frequency is ______________ .
(e) Galton whistle produces sound of frequency greater than ___________________ .
(f) Unwanted sound is called ______________ .
(g) Sound having more frequency is called a _________________ pitch sound.
(i) Pitch increases with the increase in the ________________ of a vibrating body.
Q-2 True or False:
(a) Sound can travel in vacuum.
(b) Sound makes the eardrum vibrate.
(c) The time taken by vibrating body to complete one vibration is called frequency.
(d) The sound produced by different whistles are the same.
(e) Galton whistle is used to train dolphins.
(f) Infrasonic vibrations have a range above 20,000hz.
(g) Large vibration produces loud sounds.
(h) With the increase in frequency of a vibrating body the sound becomes shrill.
(i) Louder the sound less is the amplitude of vibrating body.
Multiple Choice Questions
Q-1 Which of the following is not a form of energy?

(i)

Light

(ii)

Electricity

(iii)

Sound
Q-2 How does a sound from a source reach our ears ?

(i)

Through vibration of our eardrum

(ii)

Through vibration of air molecules

(iii)

cThrough vibration of the object at the source
Q-3 Which property of the sound wave increases when music is made louder?

(i)

Frequency

(ii)

Speed

(iii)

Amplitude
Q-4 Which part of the ear transmits sound vibrations to the brain?

(i)

Cochlea

(ii)

Auditory nerve

(iii)

Eardrum
Q-5 Which of the following instrument emits musical note due to vibration of strings?

(i)

Guitar

(ii)

Drum

(iii)

Flute
Chapter-13   Chemical Effects of Electric Current
Q-1 Fill in the blanks :
(a) A wire made of a conducting material forms the ________________ for the current.
(b) Copper is a _______________ conductor and rubber is a ________________ .
(c) Silicon and germanium are ______________ .
(d) Tap water contains some _______________ .
(e) The liquid which conducts electricity and undergoes decomposition is called an _________________ .
Q-2 True or False:
(a) Both electrons and protons have the same charges.
(b) Distilled water is pure water.
(c) Anode is the positive electrode.
(d) We can coat a plastic sheet with copper through the electroplating process.
(e) Electrolyte can be solid or liquid.
Multiple Choice Questions
Q-1 Which of the following is a good electrolyte?

(i)

Sugar solution

(ii)

Pure water

(iii)

Blood
Q-2 Electric current passes through a conductor by the movement of :

(i)

protons

(ii)

neutrons

(iii)

free electrons
Q-3 What is the main purpose of electroplating tools?

(i)

Protection

(ii)

Decoration

(iii)

Making it more expensive
Q-4 Which gases are liberated during electrolysis of water?

(i)

Oxygen and nitrogen

(ii)

Oxygen and carbon dioxide

(iii)

Hydrogen and oxygen
Q-5 Which of the following will allow electricity to pass through it?

(i)

Plastic

(ii)

Distilled water

(iii)

Carbon
Chapter-14   Some Natural Phenomenon
Q-1 Fill in the blanks :
(a) An earthquake means the _______________ and ________________ of the earth surface
(b) The point of origin of an earthquake is called _______________ .
(c) The study of earthquakes is called ______________ .
(d)The intensity of power of earthquakes is measured on the _______________ scale
Q-2 True or False:
(a) Electrons are free to move.
(b) When two bodies are rubbed together only one of them gets charged.
(c) Electric charge can not be transferred to a neutral object.
(d) Streaks of bright light are called lightning.
(e) A discharge of static electricity takes the shortest path from one object to another.
Multiple Choice Questions
Q-1 Which one of the following is not a natural phenomenon?

(i)

Lightning

(ii)

Thunder

(iii)

Conduction
Q-2 The word ‘atom’ has been developed from which language?

(i)

French

(ii)

Greek

(iii)

German
Q-3 What kind of a charge does a neutron have?

(i)

No charge

(ii)

Positive

(iii)

Negative
Q-4 In which of the following processes is physical contact not required?
Chapter-15   Light
Q-1 Fill in the blanks :
(a) The ______________- is a perpendicular line to the surface of the mirror.
(b) Kaleidoscope works on the principle of __________________ .
(c) When light passes through a prism _________________ may takes place.
(d) The normal value for a ______________ is approximately 25 cm.
Q-2 True or False:
(a) A virtual image can be obtained on a screen.
(b) The pupil of the eye is located in the centre of the iris.
(c) The pupil of the eye is located in the centre of the iris.
(d) When a ray passes along the normal it suffers no deviation.
(e) In multiple reflection the maximum number of images that can be formed are twenty.
(f) A mirror is used in a kaleidoscope.
Multiple Choice Questions
Q-1 The human eyes behaves like which of the following instruments?

(i)

Optical instrument

(ii)

Mechanical instrument

(iii)

Binocular instrument
Q-2 For two parallel mirrors facing each other the number of images formed are:

(i)

20

(ii)

10

(iii)

6
Q-3 In reflection, the angle of incidence is always equal to the angle of:

(i)

reflection

(ii)

refraction

(iii)

emergence
Q-4 Which one of these rays would you call an incident ray?

(i)

Any ray which passes through a transparent medium

(ii)

A ray which gets reflected

(iii)

A ray which hits a reflecting surface
Chapter-16   Stars and Solar System
Q-1 Fill in the blanks :
(a) _______________ is the smallest planet in our solar system.
(b) In India Ursa Major is known as _____________ .
(c) ________________ is our natural satellite.
(d) _______________ was the first Indian satellite.
(e) Pole star is the common name for the ___________________ .
Q-2 True or False:
(a) Both comets and asteroids have a head and a tail.
(b) Asteroids are also termed as mini planet.
(c) Light year is to express the speed with which light travel from the Sun.
(e) Our solar system had eight planets earlier but now has nine planets.
(f) Artificial satellite is used for military purposes.
Multiple Choice Questions
Q-1 Which of these is a planet?

(i)

Jupiter

(ii)

Sun

(iii)

Moon

(iv)

Jupiter

(v)

Saturn

(vi)

Uranus
Q-2 Which of these is the nearest planet to the Sun?

(i)

Mercury

(ii)

Venus

(iii)

Earth
Q-3 Which of these is the brightest object in the night sky?

(i)

Sun

(ii)

Moon

(iii)

Earth
Q-4 Which of these is the largest planet?
Q-5 Which of the following is the fourth planet from the Sun?

(i)

Mars

(ii)

Uranus

(iii)

Neptune
Q-6 Which of the following in the smallest planet?

(i)

Earth

(ii)

Uranus

(iii)

Mercury
Q-7 In which year did Russia launch its first artificial satellite?

(i)

1957

(ii)

1958

(iii)

1959
Q-8 Which of these is India’s first artificial satellite?

(i)

Bhaskara

(ii)

Aryabhatta

(iii)

Rohini