Rulers, measuring tapes and metre scales are used to measure

(a)

Mass

(b)

Weight

(c)

Time

(d)

Length

The diameters of spherical objects are measured with a_________scale.

(a)

pitch

(b)

meter

(c)

head

(d)

vernier

Which of the following graph represents uniform motion of a moving particle?

(a)

(b)

(c)

(d)

The hands of the clock, the spokes of wheel are example of _______

(a)

linear motion

(b)

circular motion

(c)

oscillatory motion

(d)

revolutionary motion

The focal length of a concave mirror is 5cm. Its radius of curvature is

(a)

5 cm

(b)

10 cm

(c)

2.5 cm

A virtual and equal sized image is formed by ___________________mirrors.

(a)

convex

(b)

plane

(c)

convex

(d)

spherical

To form a real image -________________mirror is required.

(a)

parallel

(b)

plane

(c)

convex

(d)

concave

Filtration method is effective in separating _______ mixture

(a)

Solid-solid

(b)

solid-liquid

(c)

liquid-liquid

(d)

liquid-gas

Light, sound, heat, etc., are not matter. They are different forms of

(a)

solids

(b)

liquids

(c)

gases

(d)

energy

Energy is neither given out nor absorbed in the preparation of_____

(a)

element

(b)

compound

(c)

mixture

(d)

solvent

To separate two or more miscible liquids which do not differ much in the boiling points_______is employed

(a)

distillation

(b)

filtration

(c)

decantation

(d)

fractional distillation

Law of multiple proportions was proposed by _________

(a)

J. Ritcher

(b)

Rutherford

(c)

John Dalton

(d)

J.J Thomson

The circular orbits are numbered as 1,2,3,4, .... These numbers are referred as _________

(a)

Principal Quantum Number

(b)

Azimuthal Quantum Number

(c)

Magnetic Quantum Number

(d)

Spin Quantum Number

The outermost shell of an atom is called its________ shell.

(a)

inner

(b)

outer

(c)

valence

(d)

sub shell

Transpiration takes place through _____________.

(a)

fruit

(b)

seed

(c)

flower

(d)

stomata

Rhizophora is an example for_________________.

(a)

positive geotropism

(b)

Positive phototropism

(c)

Positive hydrotropism

(d)

Negative geotropism

Von Helmont conducted his experiment in the year_____________.

(a)

1684

(b)

1468

(c)

1864

(d)

1648.

Maize plant transpire _____________ gallons of water during its life span.

(a)

34

(b)

44

(c)

64

(d)

54

Dysentery is caused by

(a)

Entamoeba

(b)

Euglena

(c)

Plasmodium

(d)

Paramecium

The smallest bat lives in_________.

(a)

America

(b)

Thailand

(c)

Africa

(d)

Canada

Which one is the Mammal like reptile?

(a)

DImetrodon

(b)

Crocodile

(c)

Lizard

(d)

Snake

Phillippine goby is found in___________.

(a)

marine water

(b)

brackish water

(c)

salt water

(d)

fresh water

Any disease caused by the presence of excess vitamin is _________ .

(a)

Night blindness

(b)

Osteoporosis

(c)

Vitaminosis

(d)

Hyper vitaminosis

Vitamin E is otherwise known as _________ .

(a)

Riboflavin

(b)

Thiamine

(c)

Tocopherol

(d)

Calciferol

Lipases are enzymes which breaks down __________.

(a)

Proteins

(b)

Fats

(c)

Carbohydrates

(d)

Food

The specific heat capacity of water is

(a)

4200 Jkg^-1K^-1

(b)

420 Jg^-1K^-1

(c)

0.42 Jg^-1K^-1

(d)

4.2 Jkg^-1K^-1

The amount of heat required to raise the temperature through 1⁰C is called_________

(a)

thermal energy

(b)

calorie

(c)

heat capacity

(d)

specific heat capacity

Sweating causes cooling because water has a_______

(a)

high specific heat

(b)

low specific heat

(c)

high latent heat of fusion

(d)

high latent heat of vaporisation

On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?

(a)

On heating Glass expands and lid contracts

(b)

On heating lid expands more than the neck and thus slides easily

(c)

Neck becomes slippery on heating

(d)

Lid of the bottle cannot bear the heat.

In an electrolyte the current is due to the flow of

(a)

electrons

(b)

positive ions

(c)

both (a) and (b)

(d)

neither (a) nor (b)

A current of 2A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is__________

(a)

0.5\(\Omega \)

(b)

2\(\Omega \)

(c)

4\(\Omega \)

(d)

20\(\Omega \)

Two resistances R₁ and R₂ are connected is parallel. Their equivalent resistance is__________

(a)

R₁₊R₂

(b)

\(\cfrac { { R }_{ 1 }{ R }_{ 2 } }{ { R }_{ 1 }+{ R }_{ 2 } } \)

(c)

\(\cfrac { { R }_{ 1 }+{ R }_{ 2 } }{ { R }_{ 1 }{ R }_{ 2 } } \)

(d)

\(\sqrt { { R }_{ 1 }+{ R }_{ 2 } } \)

Assertion (A) : A bird perches on a high power line and nothing happens to the bird.
Reason (R) : The level of bird is very high from the ground.

(a)

If both assertion and reason are true and reason is the correct explanation of assertion.

(b)

If both assertion and reason are true but reason is not the correct explanation of assertion.

(c)

If assertion is true but reason is false

(d)

If assertion is false but reason is true

The unit of magnetic flux density is

(a)

weber

(b)

weber/metre

(c)

weber/metre²

(d)

weber. metre²

Noble gases are placed in_____________ group in the modern periodic table.

(a)

13^th

(b)

18^th

(c)

17^th

(d)

2^nd

Assertion (A): Group 2 elements in the modern periodic table are called alkaline earth metals.
Reason (R): The oxides of group 2 elements produce alkaline solutions when they are dissolved in water

(a)

A is right R is wrong

(b)

R explains A

(c)

R does not explain A

(d)

R is right A is wrong

Assertion (A): Noble gases are chemically inert in nature.
Reason (R) : Noble gases have stable electronic structures

(a)

Both A & R are right

(b)

Both A & R are wrong

(c)

A is right R is wrong

(d)

A is wrong R is right

___________compounds are highly brittle

(a)

Ionic

(b)

Covalent

(c)

Co-ordinate covalent

(d)

Covalent

The bond which is formed by mutual sharing of electrons is called ________bond.

(a)

ionic

(b)

covalent

(c)

co-ordinate covalent bond

(d)

all the above

Statement (A) : Covalent compounds are bad conductor of electricity.
Reason (B) Covalent compounds contain charged particles (ions)

(a)

B explains A

(b)

B does not explain A

(c)

Both A & B are right

(d)

Both A & B are wrong

The property which is characteristics of an Ionic compound is that

(a)

it often exists as gas at room temperature

(b)

it is hard and brittle

(c)

it undergoes molecular reactions

(d)

it has low melting point

_____&_______metals do not react with HCI or HNO₃

(a)

Gold & Magnesium

(b)

Silver & Magnesium

(c)

Gold & Silver

(d)

Zinc & Silver

Bases ionise in water to form______ions

(a)

H⁺

(b)

H₃O⁺

(c)

OH^-

(d)

O^2-

NaOH & KOH are____

(a)

strong bases

(b)

metal Oxides

(c)

weak bases

(d)

diacidic bases

White fibres of connective tissue are made up of

(a)

elastin

(b)

reticular fibres

(c)

collagen

(d)

myosin

__________is the smallest gland

(a)

Pancreas

(b)

Sublingual

(c)

Parotid 

(d)

Submaxillary

The act of bringing swallowed food back to the mouth is called___________

(a)

egestion

(b)

ingestion

(c)

micturition

(d)

regurgitation

Gastric glands do not secrete__________

(a)

renin

(b)

pepsin

(c)

lipase

(d)

none of the above

Which one of the following is an example for wireless connections?

(a)

Wi-Fi

(b)

Electric wires

(c)

VGA

(d)

USB

Pen drive is _______device.

(a)

Output

(b)

Input

(c)

Storage

(d)

connecting cable

Instrument used to measure relative density

(a)

Hydrometer

(b)

Lactometer

(c)

Barometer

(d)

Pycnometer

An iron ball is weighed in air and then in water by a spring balance.

(a)

Its weight in air is more than in water.

(b)

Its weight in water is more than in air

(c)

Its weight is same both in air and water.

(d)

Its weight is zero in water.

If the speed of a wave is 340 m s^-1 and its frequency is 1700 Hz, then wavelength λ for this wave in cm will be

(a)

34

(b)

20

(c)

15

(d)

0.2

Which of the following is not a planet of our solar system?

(a)

Sirius

(b)

Mercury

(c)

Saturn

(d)

Earth

The member of our solar system, with highly tilted orbit is _____________.

(a)

Earth

(b)

Pluto

(c)

Mars

(d)

Saturn

Graphene is one atom thick layer of carbon obtained from

(a)

Diamond

(b)

Fullerene

(c)

Graphite

(d)

Gas Carbon

1% solution of Iodoform is used as

(a)

antipyretic

(b)

antimalarial

(c)

antiseptic

(d)

antacid

Increased amount of ___________ in the atmosphere, results in greenhouse effect and global warming

(a)

carbon monoxide

(b)

sulphur dioxide

(c)

nitrogen dioxide

(d)

carbon dioxide

__________ is the method of growing plants without soil.

(a)

Horticulture

(b)

Hydroponics

(c)

Pomology

(d)

None of these.

Mosquito borne viral diseases are

(a)

malaria and yellow fever

(b)

dengue and chikungunya

(c)

filariasis and typhus

(d)

kala azar and diptheria

Convert: 104°F into Celsius scale.

Calculate the correct readings of the Vernier caliper L.C. 0.01 em Zero correction - Nil.

S.No.	M.S.R	V.C	Observed Reading = M.S.R + (V.C x L.C)	Correct Reading
1	3	4
2	3	7

Complete the table:

Power of 10	Prefix	Symbol
1012	___(i)___	T
___(ii)___	Kilo	K
1015	Peta	___(iii)__
109	___(iv)__	___(v)__

What is acceleration?

How is washing machine wash the clothes?

If an object is placed at the focus of a concave mirror, where is the image formed?

What is convex mirror?

What is principal axis?

Fill in the numbered blanks to make the heating curve meaningful.

Is air a pure substance or Mixture? Justify.

Arrange the following in the increasing order of atomic number
Calcium, Silicon, Boron, Magnesium, Oxygen, Helium, Neon, Sulphur, Fluorine and Sodium

What is combination reaction ?

Which flowering plant shows photonasty just opposite to that of Dandelion?

Define taxonomy?

Are Reptilian eggs covered with shells?

Differentiate : Kwashiorkar from Marasmus 

How many types of adulterants are there?

How computer generations are categorised?

Water is used as a coolant in car radiators. Why?

Does a solar cell always maintain the potential across its terminals constant? Discuss.

Define magnetic effect of electric current.

State Newlands' Law of Octaves

Complete the equation Na₂CO₃+2HCl ⟶ ?+? +CO₂↑

What is crossing over?

What is parturition?

What is a satellite? What are the two types of satellites?

Who is called 'Father of Modern Organic Chemistry'?

What is Chemotherapy?

Differentiate mass and weight.

The mass of an object is 5 kg. What is its weight on the earth?

What remains constant in uniform circular motion? And What Changes continuously in uniform circular motion?

What is the unit of refractive index?

Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?

Distinguish between dispersed phase and dispersion medium.

Methane burns in oxygen to form carbon dioxide and water vapour as given by the equation
CH_4(g) + 2O_2(g) ➝ CO_2(g)+ 2H₂O_(g)
Calculate: (i) the volume of oxygen needed to burn completely 50 cm³ of methane and (ii) the volume of carbon dioxide formed in this case.

What are isotones? Give example.

Imagine that student A studied the importance of certain factors in photosynthesis. He took a potted plant and kept it in dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with dark paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
(a) What aspect of photosynthesis was being investigated
(b) Why was the plant kept in the dark before the experiment?
(c) How will you prove that starch is present in the leaves?
(d) Name the raw materials needed for photosynthesis?

Comment on the aquatic and terrestrial habits of amphibians.

Look at the picture and answer the question that follows
a) Name the process involved in the given picture.
b) Which diary food is preserved by this process?
c) What is the temperature required for the above process?

What is Pasterurization?

What is data processing?

Can two magnetic lines of force intersect? Justify your answer.

What are the limitations of Mendeleev's periodic table?

Explain Octet rule with an example.

Ionic compounds are crystalline solids at room temperature.

What are organic acids? Given examples?

What is complex tissue? Name the various kinds of complex tissues.

Reproductive organs are also considered as endocrine glands

What are the types of monitor?

What is meant by atmospheric pressure?

Write any two practical application of sound waves.

What are Biometrics?

According to you, which process of water cycle is adversely affected by human activities?

What is the nutritional importance of fish liver oils? Name any two marine fishes which yield these oils.

Sanjay had an attack of chicken pox and has just recovered. The health officer of his locality says that the disease would not occur again for him. What would be the reason for this?

Explain the method to find the diameter of the sphere.

A racing car has a uniform acceleration of 4 ms^-2. What distance it covers in 10 s after start?

The ray of light enters from air to Kerosene? Refractive index of Kerosene is 1.41. Calculate the velocity of light in Kerosene.

Write the properties of mixture.

Lead forms three oxides A, B and C. The quantity of oxygen in each of the oxides A, B and C is 7.143%, 10.345% and 13.133% respectively. Show that the law of multiple proportions is obeyed.

Design an experiment to demonstrate hydrotropism.

Draw the life cycle of jelly fish.

Write a brief note on mineral nutrients.

List out the generations of computer

Convert the following:
(1) 100⁰F to ⁰C
(2) 40⁰C to Fahrenheit (⁰F)
(3) 35⁰C to Kelvin
(4) 80⁰K to ⁰C

Calculate the effective resistance between A and B as shown is the figure

Explain the principle, construction and working of a AC generator.

Write the advantages of Modern Periodic Table.

List down the differences between Ionic and Covalent compounds.

Describe the classification of bases based on their acidity.

Explain the components of phloem tissue

Write a note on functions of liver in digestion.

a) When a golf ball is lowered into a measuring cylinder containing water, the water level rises by 40cm³, when the ball is completely submerged. If the mass of the ball in air is 44g. Calculate its density.
b) A 5kg sheet of tin sinks in water but if the same sheet is converted into a boat or a box, it floats. Give reason.

Write any five applications of ultrasonic waves.

List out the drawbacks of Nanomaterials in chemistry.