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Chemistry

Total questions: 50

Worksheet time: 43mins

Name
Class
Date
1.

In correct position tell first ten elements

a)

H,He,Li,Be,B,C,N,O,F,Ne

b)

H,He,Li,Be,B,C,N,O,F,Na

c)

H,He,Li,B,Be,C,N,O,F,Ne

d)

All are correct

2.

Atomic mass of carbon

a)

12

b)

20.14

c)

3.3

d)

20.22

3.

Nitrogen dioxide is a :

a)

greenish yellow coloured gas

b)

colourless

c)

reddish brown coloured gas

d)

none of these

4.

Which metal is used for making coins and ornaments along with gold and other metals?

a)

(a) Zn

b)

(b) Al

c)

(c) Cu

d)

(d) Fe

5.
Which scientific law states that an atom cannot be created or destroyed:
a)
Law of Conservation of Matter
b)
Law of Gravity
c)
Law of Conservation of Mass
d)
Law of Motion
6.

The proper formula for magnesium hydroxide:

a)

MgOH

b)

Mg2OH

c)

Mg(OH)2

d)

Mg2OH2

7.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
8.
If a Carbon atom has 6 protons, how many electrons will it have?
a)
2
b)
4
c)
6
d)
8
9.
The image shows the periodic grid for POTASSIUM. What is Potassium's atomic mass?
a)
19
b)
39
c)
20
d)
Impossible to tell
10.

Examples of elements which do not show variable valency are ______.

a)

Cu and Fe

b)

Cu and Zn

c)

Zn and Al

d)

Sn and Al

11.
The FORCE that PULLS things down or back to EARTH.
a)
Speed
b)
Gravity
12.

A magnet cannot move which of the following objects?

a)

a paper clip

b)

a nail

c)

a toothpick

d)

a staple

13.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
14.

7,000 g = ____ kg

a)

70

b)

700

c)

7

d)

0.07

15.
Which unit is a a measure of volume?
a)
meters
b)
grams
c)
inches
d)
liters
16.

a force that resists the motion of two surfaces sliding across one another

a)

unbalanced forces

b)

direction

c)

motion

d)

friction

17.

_ energy is the energy of motion.

a)

Kinetic

b)

Potential

18.

The measure of the degree of warmth and coldness of an object is expressed as a measure...

a)

A. Force

b)

B. Temperature

c)

C. power

d)

D. Strong current

19.

Ampere is the SI unit of ...

a)

A. long

b)

B. Mass

c)

C. time

d)

D. Strong electric current

20.
What type of eclipse occurs when the moon blocks the sun's light and cast a shadow on earth?
a)
solar
b)
lunar
21.

Choose the animal that is a vertebrate.

a)
b)
c)
d)
22.

The scientific name of an organism is made up of two parts...

a)

English and Spanish

b)

Genus and Species

c)

Domain and Kingdom

d)

Class and Order

23.
______ are also called flatworms. They are bilaterally symmetrical, dorsoventrally flattened worms that include planaria, flukes and tapeworms. 
a)
Cnidarians
b)
Platyhelminthes
c)
Nematodes
d)
Mollusks
24.

9. Water is transported with the help of ..........

a)

xylem

b)

phloem

c)

air space

25.

3. What is the tiny openings that let in the carbon dioxide needed for photosynthesis?

a)

pores

b)

stomata

c)

guard pores

26.
What is the difference between unicellular and multicellular?
a)
They are the same
b)
One has a nucleus and one doesn't
c)
Unicellular has one cell and multicellular has many 
d)
One is bacteria and the is archaebacteria
27.
The scientific name for an organism is made from the:
a)
class and family name
b)
genus and species name
c)
domain and kingdom name
d)
kingdom and phylum name
28.
 You would find mushrooms in which kingdom?
a)
Plantae
b)
Protists
c)
Fungi
d)
Animalia
29.
An organism that gets its food by consuming other organisms is known as a:
a)
heterotroph
b)
autotroph
c)
prokaryote
d)
eukaryote
30.
An organism that has cells that lack a nucleus are called:
a)
Eukaryote
b)
Heterotroph
c)
Prokaryote
d)
Autotroph
31.

When the length and width are 3m and 4m respectively. What is the perimeter of the rectangle?

a)

14m

b)

24m

c)

20m

d)

18m

32.
Surface area of cuboid= ___________________
a)
lb+bh+lh
b)
lxb
c)
2(lb+bh+lh)
d)
2(l+b)
33.

There are 7 boys and 14 girls in the classroom. What is the probability of randomly choosing a girl?

a)

3/7

b)

6/10

c)

3/5

d)

2/3

34.

2 billion = __________ crores.

a)

2

b)

20

c)

200

d)

2000

35.

Which is the smallest number?

a)

01

b)

11

c)

22

d)

10

e)

13

36.

In Rational Numbers both Numerator and Denominator are ____________

a)

Integers

b)

Whole Numbers

c)

Natural Numbers

d)

Composite Numbers

37.

422,987 = ______ thousands + 987 ones

a)

2

b)

22

c)

422

d)

4

38.

The difference between the successor and predecessor of 9999 is

a)

1

b)

2

c)

10

d)

None of the above

39.

400 more than the successor of 399 is equal to _______

a)

401

b)

499

c)

400

d)

800

40.
If the length and width of the rectangle is 5 cm and 7 cm. What is the area of the rectangle?
a)
40 cm2
b)
35 cm2
c)
35 m2
d)
45cm2
41.

So in 1892 they just renamed ... mountains!

a)

the

b)

a

c)

-

42.

They are situated only ... few kilometres apart.

a)

the

b)

a

c)

-

43.

Here is ... amusing anecdote about its two highest peaks.

a)

an

b)

the

c)

-

44.

... Australian Alps are ... only place in ... Australia where ... deep snow falls every year.

a)

The, the, the, the

b)

The, an, an, a

c)

-, the, -, -

d)

The, the, -, -

45.

_____! You made an A+ on the test.

a)

No

b)

Oops

c)

Hmmm

d)

Hooray

46.

"____ , Mary! Come here! I want to talk to you.

a)

Oops

b)

Mmm

c)

Yay

d)

Hey

47.

"_____! You're stepping on my foot."

a)

Ah

b)

Oh

c)

Ouch

d)

Well

48.

Give the correct form of verb

Does Anna ______ up early this morning?

a)

wake

b)

wakes

c)

woke

49.

Give the correct form of verb

Keep silent! My younger sister __________

a)

sleeping

b)

slept

c)

is sleeping

50.

Give the correct form of verb

We _______ to Nha Trang beach last summer

a)

travelled

b)

travel

c)

travelling

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