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G7 Annual exam 2023-24

Total questions: 69

Worksheet time: 1hrs 23mins

Name
Class
Date
1.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
2.
 Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
3.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
4.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
5.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
6.
What do acids do to red litmus paper?
a)
Turn it Red 
b)
Turn it Blue
c)
Turn it Yellow
d)
Turn it Green
7.
Which of the following is a positive for  an acid
a)
Blue Litmus paper staying blue
b)
Red Litmus paper staying red
c)
Phenolphthalein being purple
d)
Bromothymol blue turning blue
8.
What is the name of the following acid: HCl
a)
hydrochloric acid
b)
chloric acid
c)
perchloric acid
d)
chlorous acid
9.
What is the name of the following acid: H2SO4
a)
hydrosulfuric acid
b)
sulfuric acid
c)
sulfurous acid
d)
persulfuric acid
10.
What is the name of the following: NaOH
a)
sodium hydroxide
b)
sodium oxide hydrogen
c)
hydrosodium acid
d)
sodium hydrogen oxide
11.
Which food is the most acidic?
a)
bananas
b)
lemon juice
c)
orange juice
d)
fish
12.
products of a neutralisation reaction are always
a)
an acid and a base
b)
an acid and a salt
c)
salt and water
d)
salt and base
13.

Why is toothpaste alkaline?

a)

It can neutralise strong alkaline in

your mouth

b)

It can neutralise acid in

your mouth

c)

It can refresh your teeth

d)

Toothpaste is not alkaline.

14.

... are used to neutralise acid in the stomach.

a)

Toothpastes

b)

Bacterias

c)

Antacids

d)

More strong acids

15.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
16.

How many blood vessel types do humans have?

a)

4

b)

5

c)

3

d)

2

17.

Human blood vessels are

a)

artries, capillaries, and atria

b)

ventricles, atria and pulmonary veins

c)

capillaries, artries, and veins

d)

veins, artries, and aorta

18.

The thickest and strongest blood vessel is the

a)

vein

b)

artery

c)

capillary

d)

both veins and capillaries

19.

Valves in veins

a)

support them

b)

protect them

c)

prevent the backward movement inside them

d)

provide them elesticity

20.

Which blood cells carry oxygen throughout the body?

a)

Red

b)

White

c)

Plasma

d)

Platelets

21.

What is the yellowish liquid that carries nutrients and proteins through the body?

a)

Red

b)

White

c)

Plasma

d)

Platelets

22.

Which blood cells that help you stop bleeding if you get a cut?

a)

Red

b)

White

c)

Plasma

d)

Platelets

23.

What is the function of white blood cells?

a)

carry oxygen

b)

fight infection

c)

carry nutrients

d)

clot blood

24.
The main purpose of Red Blood Cells is to 
a)
carry gases, wastes, and nutrients
b)
attack and destroy pathogens
c)
clot the blood
d)
digest food
25.
The lack of sufficient red blood cells in the blood system is called
a)
cyanosis
b)
anemia
c)
hemochromatosis
d)
hypoxia
26.

Vegetative propagation in potato takes place by

a)

leaves

b)

stem

c)

roots

d)

seed

27.
The pollen grains are found in this part of the stamen.
a)
anther
b)
style
c)
pistil
28.
The part of the flower on which the pollen grains land.
a)
pistil
b)
stamen
c)
sepals
d)
stigma
29.
The enlarged base of the pistil that stores the eggs of the plant is the ___.
a)
ovary
b)
ovule
c)
stigma
d)
style
30.
Brightly colored parts of flowers that attract insects.
a)
petals
b)
pistils
c)
stamen
d)
filaments
31.
They enclose the egg cells inside the ovaries.
a)
ovules
b)
anther
c)
seeds
d)
stamen
32.
The female part of a flower is
a)
pistil
b)
stamen
c)
filament
d)
sepal
33.
Fertilization is the process by which an 
a)
egg and pollen combine
b)
embryo grows into a plant
c)
animal carries pollen between plants
34.

Why do living things reproduce?

a)

Living things do not have a choice.

b)

To ensure continuity of their kind.

c)

To ensure consistency in their kind.

35.

Which of the following is the right order?

a)

Pollination -- Dispersal -- Germination -- Fertilisation

b)

Pollination -- Fertilisation -- Germination -- Dispersal

c)

Pollination -- Dispersal -- Fertilisation -- Germination

d)

Pollination -- Fertilisation -- Dispersal -- Germination

36.

Which is NOT a characteristic of flowers that are pollinated by wind?

a)

feathery stigma

b)

light

c)

sweet nectar

d)

small petals

37.

When we prevent overcrowding of plants, we reduce the competition for ________________________________________.

a)

Water, Minerals and Light

b)

Water, Nutrients and Minerals

c)

Water, Nutrients, Light and Minerals

d)

Water, Light and Space

38.

Which of the following consists of only parts of the female parts of the flower?

a)

style, ovary, anther, pollen grain

b)

anther. style, ovary, stigma, egg cell

c)

egg cell, male reproductive cell, ovule

d)

ovule, ovary, style, stigma, egg cell

39.
I am a flower that produces nectar. What is the function of the nectar?
a)
To provide food for the flower
b)
To attract pollinators
c)
To attract animals to disperse the fruits
d)
To produce perfumes for Man
40.

Asexual reproduction does not involve gametes

a)

True

b)

False

41.

The stamen is made of the

a)

Anther & filament

b)

Anther & petal

c)

Fliament & ovary

d)

Ovary & style

42.

The carpel is made of the

a)

Stigma & petals

b)

Stigma, style & ovary

c)

Filament & anther

d)

Petals

43.

These parts attract insects

a)

Stem & leaves

b)

Stigma, Style & Ovary

c)

Anther & filament

d)

Petals & nectary

44.
Which is cross pollination?
a)
A
b)
B
c)
C
d)
D
45.
What is this?
a)
Vegetative Reproduction
b)
meiosis
c)
fertilization
d)
Animal Regeneration
46.
How does the air move in a land breeze?
a)
From east to west
b)
From west to east
c)
From the land to the ocean
d)
From the ocean to the land
47.
What kind of breeze is this & what time of day/night would it form?
a)
Land breeze - daytime
b)
Land breeze - nighttime
c)
Sea breeze - daytime
d)
Sea breeze - nighttime
48.
What three things may happen to light that strikes an object? 
a)
The light may be reflected, transmitted or absorbed.
b)
The light may be reflected and refracted.
c)
The light may be absorbed and transmitted.
49.

Which of the following is the best example of an object absorbing light?

a)

A black sweater in the sun.

b)

A clean window in the sun.

c)

A curved mirror in the sun.

d)

A long shadow in the sun.

50.
The bouncing of light off an object is ....
a)
a mirror
b)
absorption
c)
reflection
d)
refraction
51.

This leaf will

a)

Reflect green light

b)

Absorb green light

c)

Reflect red light

d)

Reflect no light

52.

The picture shows an area of Yosemite National Park.Which statement about light is supported by this picture?

a)

Light travels in a straight line until it enters a definite material like water in a lake

b)

Light can refract in air and in clean water

c)

The water in a lake is blue because light forms an image

d)

Light is reflected off the smooth surface of the lake

53.

The processes in which water vapor (a gas) in the air turns into liquid water

a)

Condensation

b)

Evaporation

c)

Precipitation

d)

Transpiration

54.

The pattern of water moving between Earth and the atmosphere.

a)

Carbon Cycle

b)

The Groundwater Cycle

c)

The Water Cycle

d)

The Carbon Cycle

55.

What is the process happening at #3

a)

Evaporation

b)

Precipitation

c)

Condensation

d)

Transpiration

56.

What process is happening at #2

a)

Evaporation

b)

Condensation

c)

Precipitation

d)

Transpiration

57.

What are examples of fresh water (there may be more than 1 correct answer)

a)

Water in the atmosphere

b)

Glaciers

c)

Ocean water

d)

Lake

58.

True or False: The more pores in the ground, the less ground water is stored there.

a)

True

b)

False

59.

This is when water evaporates through pores of a plant

a)

Transpiration

b)

Evaporation

c)

Condensation

d)

Hydrologic cycle

60.

What percent of the Earth is Fresh Water?

a)

97%

b)

45%

c)

22%

d)

3%

61.

We should not throw cooking oil and paint down the drain because

a)

they break the pipe

b)

they harden and clog the pipe

c)

they flow through the drain freely

d)

None of these

62.

This is the part where solid wastes are allowed to settle down and light floatable wastes rise

a)

Grit Chamber

b)

Sedimentation Tank

c)

Aeration Tank

d)

None of These

63.

Dried _____ is used as manure

a)

Slurry

b)

Sewage

c)

Sand

d)

Sludge

64.

Which of these is not a source of wastewater?

a)

Houses

b)

Sewage

c)

Industries

d)

Hospitals

65.

Why shouldn't we pour pesticides & fertilizers down the drain?

a)

It clogs the drain

b)

It kills the sludge digestin' bacteria

c)

Cracks are formed in the pipelines as these things harden

d)

Pollutes the water bodies

66.

A chemical to disinfect water

a)

Copper Sulphate

b)

Distilled Water

c)

Iron Sulphate

d)

Chlorine

67.
Why are non-biodegradable plastics a problem in the environment?
a)
They do not decompose or break down naturally
b)
They leak toxic chemicals
c)
They are filling up lakes and ponds
d)
They contain poisons for wildlife
68.

What is the first step of sewage treatment?

a)

Clarification

b)

Sieving

c)

Settling

d)

Aeration

69.

Sewage is mainly

a)

Liquid Waste

b)

Solid Waste

c)

Gaseous waste

d)

Mixture of solid and gaseous waste

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