Question

Q.1 Rainbow is natural phenomenon showing?

1 point

Reflection

Deflection

Dispersion

Diversion

Q.2 In optics an object which has higher refractive index is called

Optically rarer

Opticall density

Optically denser

Refractive index

Clear selection

Q.3 A Magnifying glass is also called?

1 point

Telescope

Simple microscope

Compound microscope

Endoscope

Clear selection

Q.4 As Compared to the single lens a Compound microscope gives?

1 point

Smaller Magnification

no magnification

Greater magnification

Equal magnificatiion

Clear selection

Q.5 A diverging lens will produce ------------?

1 point

Real or virtual image

Always real image

None of these

Always a virtual image

Clear selection

Q.6 A converging lens?

1 point

Concentrates light rays at a point

Reflects light rays from a point

has no effects on path of light

All of the

Clear selection

Q.7 Eye defect produced due to the low converging power of eye lens?

1 point

Hypermetropia

Presbyobia

Myopia

Astigmatism

Q.8 The person which are involved with a lot reading work usually suffer from ?

1 point

Hypermetropia

Myopia

Press byopia

asti gmatesm

Q.9 The lens of the human eye forms an image of the object on the .?

1 point

Eye ball

Cornea

Retina

lens

Q.10 Beam of light striking the reflecting surface is called ?

1 point

Reflecting ray

Incident ray

Normal ray

Refracted ray

Q.11 About 10% of water loss occurs by the method ?

1 point

Stomatal transpiration

Cuticular transpiration

lenticular transpiration

None of these

Q.12 Transportation of food materials in plant is ?

1 point

Translocation

Diffusion

Transpiration

Osmosis

Q.13 Name the process which requires energy ?

1 point

Active transport

Osmosis

Diffusion

All of them

Q.14 Xylem Vessels are present at------------- of root?

1 point

End

Begining of root

Centre

not present in roots

Q.15 Energy required for active transport is obtained from ------------ root cells ?

1 point

Photosynthesis cell

Respiring cells

Epidermic cells

Cortex cells

Q.16 Which of the following is not present in Npk salts?

1 point

Nitrogen

Sulphur

Potassium

Phosphorus

Q.17 The tissue whose main elements are sieve tubes and companion cell?

1 point

Xylem

Vascular

Both Xylem and phloem

Phloem

Q.18 Water from the root hair cells moves to the cortical cells by the process of ?

1 point

Transpiration

Conduction

Osmosis

Plasma membrane

Q.19 The rate of transpiration decrease with?

1 point

Increase in temp.

Increase in humidity

Increase in speed of wind

Increase in soil water

Q.20 Diffusion is the movement of ?

1 point

liquid and solid

solids only

gases only

liquid solids and gas

Q.21 Name the bond formed by sharing of electrons.?

1 point

Electrovalent bonds

Ionic bonds

Covalent bonds

None of these

Q.22 Name the negatively charge partical thats surrrounds the nucleus?

1 point

Electrons

Protons

Neutrons

Nucleons

Q.23 Atomic no of an atom is denoted by ?

1 point

z

a

m

x

Q.24 The first shell or the k shell can have a maximium of?

1 point

4 electrons

2 electrons

8 electrons

16 electrons

Q.25 Isotopes of the same elements have the same ?

1 point

physical properties

chemical properties

both physical and chemical properties

Neither physical nor chemical properties

Q.26 Who proposed the plum pudding model?

1 point

kanada

democritus

J.J THOMSON

Rutherford

Q.27 The isotope used for treatment of cancer is?

1 point

u-235

iodine

co-60

Sodium-24

Q.28 The electrons present in the outermmost shell are?

1 point

Valence electrons

octate eletrons

valency electrons

none of these

Q.29 The nucleons are ............?

1 point

proton and electron

neutrons and electron

protons and neutrons

only neutrons

Q.30 Give the electroinc configuration of potassium?

1 point

2,8,8,2

2,8,8,0

2,8,8,8

2,8,8,1

Q.31 Amorphous form of carbon used as a deodorizing agent ?

1 point

Coal

Charcoal

Coke

Lampblack

Q.32 Allotrope of Carbon used as a lubricant in machines to reduce friction?

1 point

Fullerenes

Coal

Graphite

lampblack

Q.33 Process of heating organic substances strongly in the absence of air?

1 point

Destructive Distillation

None of these

Distillation

Fractional

Q.34 Which form of coal is also known as household coal and contains about 70% to 90% Carbon?

1 point

Peat

Lignite

Bituminious

Anthracite

Q.35 Buckminster fullerence is an allotropic form of ?

1 point

Phosphorous

Sulphur

Carbon

Tin

Q.36 Solids whose atoms arrange themselves in different forms are?

1 point

Isotopes

Crystals

Allotropes

Amorphous

Q.37 In graphite the carbon atoms are arranged in layer of ?

1 point

Pentagonal arrays

Heptagonal arrays

Octagonal arrays

hexagonal arrays

Q.38 Combustion is a ---------?

1 point

Chemical process

Physical process

Both of these processes

None of these processes

Q.39 In the presence of water ignition temperature of paper is ?

1 point

Decrease

Increase

Remain constant

None of these

​

Answer 1

Answer:

Q1. a

2. a

3.b

ohhhh, there are 39 questions

please mark me as brain list