SI unit of density is ________.

(a)

kg/m²

(b)

kg/m³

(c)

kg/m

(d)

g/m³

________ is a derived quantity

(a)

length

(b)

mass

(c)

time

(d)

area

A particle is moving in a circular path of radius r. The displacement after half a circle would be _______.

(a)

Zero

(b)

R

(c)

2 r

(d)

r / 2

The slope of a velocity-time graph gives _______

(a)

velocity

(b)

distance

(c)

displacement

(d)

acceleration

_____________ is a substance that is made up of three oxygen atoms chemically combined.

(a)

Oxygen

(b)

Hydrogen

(c)

Ozone

(d)

CO₂

___________ exhibit the properties of metals and non-metals.

(a)

Metalloids

(b)

Copper

(c)

Carbon

(d)

Nickle

The basic unit of matter is ______.

(a)

Element

(b)

Atom

(c)

Molecule

(d)

Electron

Proton was discovered by _______________

(a)

Rutherford

(b)

Goldstein

(c)

Chadwick

(d)

J.J. Thomson

Atomic number is the number of __________ is an atom.

(a)

electron

(b)

proton

(c)

neutron

(d)

none

In __________ sepal is seen on the fruit after fertilization

(a)

Brinjal

(b)

Pumpkin

(c)

Onion

(d)

Garlic

Ravi has sound mind and physically fit body. If refers to ________ .

(a)

Hygiene

(b)

Health

(c)

Cleanliness

(d)

wealth

High fever is a symptom of ____________

(a)

Rabies

(b)

Typhoid

(c)

Scurvy

(d)

Hepatits

Which software is used to create symbols?

(a)

Photoshop

(b)

Illustrator

(c)

Vector Graphics

(d)

Photostory

_____________ is a good example for "Visual communication Device".

(a)

Computer

(b)

Cinema

(c)

Balckboard

(d)

Audio - visuals

When a woolen yarn is knitted to get a sweater, the change can be classified as _______ .

(a)

physical change

(b)

chemical change

(c)

endothermic change

(d)

exothermic change

The following characteristics are essential for classification.

(a)

Similarities

(b)

Differences

(c)

Both of them

(d)

None of them

Light travels only in a _______ It is because of this property that ______ are formed.

(a)

curved line, shadows

(b)

straight line, shadows

(c)

straight line, reflection

(d)

curved line and then straight line, shadows

Which of the following facts explain how shadows are formed?
a. Light travels in straight lines
b. Opaque bodies do not allow light to pass through them
c. Reflection occurs at a smooth surfaces like mirrors
d. Lateral inversion happens

(a)

both A and B

(b)

both A and D

(c)

both B and C

(d)

only A

A good application of plastic is the use of ________

(a)

Blood bags

(b)

Plastic cutlery

(c)

Plastic straws

(d)

Plastic carry bag

Which parts of the goat and sheep is used for manufacturing clothes.

(a)

Leg

(b)

Hand

(c)

Hair

(d)

Head