Impulse is equals to

(a)

rate of change of momentum

(b)

rate of force and time

(c)

change of momentum

(d)

rate of change of mass

Mixing sugar in a glass of milk using a spoon is ______

(a)

force

(b)

momentum

(c)

inertia of motion

(d)

inertia of direction

The ball is thrown up, the value of g will be

(a)

zero

(b)

+ve

(c)

-ve

(d)

negligible

In a myopic eye, the image of the object is formed

(a)

behind the retina

(b)

on the retina

(c)

in front of the retina

(d)

on the blind spot

_____ determines speed of light in a medium.

(a)

thickness

(b)

wavelength

(c)

refractive index

(d)

both b and c

Convex lenses are used in

(a)

camera

(b)

magnifying lens

(c)

microscope

(d)

all the above

As compare to single lens, compound microscope gives ______ magnification

(a)

Smaller

(b)

Greater

(c)

No

(d)

Equal

In the Given diagram, the possible direction of heat energy transformation is

(a)

A\(\leftarrow\)B, A\(\leftarrow\)C, B\(\leftarrow\)C

(b)

A\(\rightarrow\)B, A\(\rightarrow\)C, B\(\rightarrow\)C

(c)

A\(\rightarrow\)B, A\(\leftarrow\)C, B\(\rightarrow\)C

(d)

A\(\leftarrow\)B, A\(\rightarrow\)C, B\(\leftarrow\)C

According to Charles's law

(a)

P ∝ \(\frac{1}{V}\)

(b)

V ∝ T

(c)

V ∝ n

(d)

all the above

Why battery is used in the circuit?

(a)

Measure Current

(b)

Maintain a potential difference

(c)

Oppose the current

(d)

Measure potential

A heating element used in the electric iron box and the electric heater is

(a)

Tungsten

(b)

Nichrome

(c)

Lead

(d)

All the above

Radioactive materials are kept -in thick -walled ________ containers.

(a)

aluminium

(b)

iron

(c)

brick

(d)

lead

Which of the following statement is incorrect?

(a)

12 gram of C – 12 contains Avogadro’s number of atoms.

(b)

One mole of oxygen gas contains Avogadro’s number of molecules

(c)

One mole of hydrogen gas contains Avogadro’s number of atoms

(d)

One mole of electrons stands for 6.023 × 10²³ electrons.

The mass of an atom is measured in ____________

(a)

kg

(b)

amu

(c)

g

(d)

Pm

Which of the following correctly represent 360 g of water
(i) 2 moles of H₂O
(ii) 20 moles of water
(iii) 6.023 x 10²³ molecules of water
(iv) 1.2046 x 10²⁴ molecules of water

(a)

(i)

(b)

(i) and (iv)

(c)

(ii) and (iii)

(d)

(ii) and (iv)

Modern periodic law is based on __________

(a)

atomic mass

(b)

atomic number

(c)

number of neutrons

(d)

Both (a) and (b)

Example for solid in solid ___________

(a)

Soda water

(b)

Camphor in air

(c)

Charcoal

(d)

alloy

Pick out
Compound + element ⟶ compound type of combination reaction

(a)

PCl₅ ⟶ PCl₃ + Cl₂

(b)

Mg + O₂ ⟶ 2MgO

(c)

PCl₃ + Cl₂ ⟶ PCl₅

(d)

2Na + Cl₂ ⟶ 2NaCl

Which of the following are used as an aesthetics?

(a)

Carboxylic acids

(b)

Ethers

(c)

Esters

(d)

Aldehydes

Identify the ketone among the following

(a)

CH₃COCH₃

(b)

CH₃CHO

(c)

CH₃COOH

(d)

CH₃COOCH₃

The body of leech has

(a)

23 segments

(b)

33 segments

(c)

38 segments

(d)

30 segments

Dental formula of rabbit is______

(a)

\(\cfrac { 2033 }{ 1023 } \)

(b)

\(\cfrac { 2003 }{ 1003 } \)

(c)

\(\cfrac { 2030 }{ 1020 } \)

(d)

\(\cfrac { 2023 }{ 1220 } \)

A patient with blood group O was injured in an accident and has blood loss. Which group of blood should be used by doctor for transfusion?

(a)

O group

(b)

AB group

(c)

A and B group

(d)

All blood group

_______is not a feature of osmosis 

(a)

Semi permeable membrane

(b)

Movement of solvent

(c)

Both a and b

(d)

Involves energy

Node of Ranvier is found in

(a)

muscles

(b)

axons

(c)

dendrites

(d)

cyton

_____ is the longest cell of the human body.

(a)

Neuron

(b)

Neuroglia

(c)

Nerve fibres

(d)

Cyton

Identify the exocrine gland

(a)

Pituitary gland

(b)

Adrenal gland

(c)

Salivary gland

(d)

Thyroid gland

Auxins were identified by ______

(a)

Darwin

(b)

Kogi

(c)

Went

(d)

Funk

Thyroid gland requires _____ of iodine everyday for the production of thyroxine.

(a)

120 μg

(b)

110 μg

(c)

100 μg

(d)

150 μg

A single highly coiled tube where sperms are stored, get concentrated and mature is known as

(a)

Epididymis

(b)

Vasa efferentia

(c)

Vas deferens

(d)

Seminiferous tubules

_______from the posterior pituitary stimulates the uterine contractions

(a)

Oxytocin

(b)

Insulin

(c)

Estrogen

(d)

Prolactin

Okasaki fragments are joined together by ___________________.

(a)

Helicase

(b)

DNA polymerase

(c)

RNA primer

(d)

DNA ligase

World 'No Tobacco Day' is observed on

(a)

May 31

(b)

June 6

(c)

April 22

(d)

October 2

Soil erosion can be prevented by

(a)

deforestation

(b)

afforestation

(c)

over growing

(d)

removal of vegetation