SI unit of density is ________.

(a)

kg/m²

(b)

kg/m³

(c)

kg/m

(d)

g/m³

The SI unit of speed is __________

(a)

m/s²

(b)

m/s

(c)

km/h

(d)

m²/s

Which of the following is correct

(a)

magnitude of displacement may be greater than distance

(b)

Distance is always greater than or equal to the magnitude of displacement.

(c)

Distance is always greater than the magnitude of displacement.

(d)

Both are scalar quantities.

Which of the following is a short and scientific way of representing one molecule of an element or compound?

(a)

Mathematical formula

(b)

Chemical formula

(c)

Mathematical symbol

(d)

Chemical symbol

The smallest unit of an element is _____________

(a)

atom

(b)

molecule

(c)

compound

(d)

none

_________ is used for making mobile phones

(a)

Sodium

(b)

Copper

(c)

Gold

(d)

Gallium

Who discovered the existence of the negatively charged particles is an atom?

(a)

John Dalton

(b)

Rutherford

(c)

Neils Bohr

(d)

J.J. Thomson

₁₂⁶C Here 6 represents atomic number. What does 12 represent?

(a)

protons

(b)

electrons

(c)

neutrons

(d)

mass number

Reproductive part of a plant is _________.

(a)

Root

(b)

Stem

(c)

Leaf

(d)

Flower

Centella is an example of __________

(a)

Stolon

(b)

Runner

(c)

Corm

(d)

Rhizome

Drinking boiled water can prevent _____________

(a)

Tuberculosis

(b)

Rabies

(c)

Cholera

(d)

Chicken pox

Which option is used in the Microsoft Photostory to upload the photos?

(a)

Begin a Story

(b)

Import Pictures

(c)

Settings

(d)

View your Story

_____________ is a storage space that contains multiple files.

(a)

Folder

(b)

File

(c)

Record

(d)

Archire

In the circuit shown, which switches (L, M or N) must be closed to light up the bulb?

 

(a)

switch L only

(b)

switch M only

(c)

Switch M and N only

(d)

either switch L or switches M and N

Which part of the cell is called the brain of the cell?

(a)

Lysosome

(b)

Ribosome

(c)

Mitochondria

(d)

Nucleus

What is the shortcut key for undo option?

(a)

Ctrl + Z

(b)

Ctrl + R

(c)

Ctrl + Y

(d)

Ctrl +N

Which of the following is the best reflector of light?

(a)

plastic plate

(b)

plane mirror

(c)

wall

(d)

paper

Which of the following is the strongest?________

(a)

Rayon

(b)

Nylon

(c)

Acrylic

(d)

Polyester

Which is the hottest part in the flame of candle_______.

(a)

Blue

(b)

Yellow

(c)

Black

(d)

Way part

The menu is used to save the document ______.

(a)

File-> open

(b)

file-> print

(c)

file-> save

(d)

file->close