Year End Examination-2023
Name: ……………………………………..
Grade: ……………………………………..
Subject: Science
Time Duration: 1 hour &15min
PART- 1
Select the correct answer from the below
1). Which oxide forms a base on dissolving in water?
a. Iron Oxide
b. Sulphur Oxide
c. Aluminium Oxide
d. Silicon Oxide
2). Matter has ______ and occupies _______
a. Weight, Area
b. Surface, Area
c. Mass, Space
d. Volume, Density
3). ____________ also called a solution, exhibits a uniform composition and
appears visually the same throughout
a. A homogeneous mixture
b. A heterogeneous Mixture
c. Element
d. Compound
4). Which metal is stored in kerosene oil?
a. Sodium
b. Zinc
c. Silver
d. Mercury
5). Which of the following is a property of the metal?
a. Sonorus
b. Poor Conductors of Heat and Electricity
c. Low melting point
d. None of the above
6). Select the particles that are responsible for acid rain.
a. Hydrogen and nitrogen
b. Hydrogen and sulphur
c. Sulphur and Nitrogen
d. Carbon dioxide and Nitrogen
7). Plants absorb oxygen by the process of __________
a. Simple diffusion
b. Osmosis
c. Photosynthesis
d. Nutrition
8). Xylem is responsible for
a. Transporting food
b. Transporting Oxygen
c. Transporting Water
d. All of the above
9). What is the economic importance of minerals? Choose the correct
answer from the given options
a. Minerals are in many things we see and use every day such as;
Bricks, Glass, Cement, Plaster, Iron and Gold
b. An ore is a rock that contains a metal or economically useful mineral.
c. Option a and Option b
d. Option a
10). Which of the following cells does not have a nucleus?
a. RBC
b. WBC
c. neuron
d. Liver cell
11). Which artery supplies oxygenated blood to the liver?
a. Pulmonary artery
b. renal artery
c. aorta
d. hepatic artery
12). Normal breathing rate in a healthy human is ___
a. 46 per minute
b. 12 - 20 per minute
c. 80 – 120 per minute
d. 60 per minute
13). How can a disease communicate from one person to another?
a. No contact with a person carrying the pathogen
b. Precaution from a bite from an animal or insect carrying the
pathogen
c. Consuming contaminated water or food
d. Inhaling another person's cough or sneeze
14). Write down the weight of a 50kg mass on the earth. (Take g= 9.8ms-2).
____________Newton
a. 490
b. 500
c. 50
d. 0
15). How much work Is done in lifting 150kg of water through a vertical
height of 6 meters (assume g= 10ms-2 )
a. 9000J
b. 10000J
c. 8500J
d. 9500J
16). Our body covert chemical energy in our food into mechanical energy
for us to move
a. True
b. False
17). State true or false. A cold metal spoon dipped in a hot cup of tea gets
heated by conduction.
a. False
b. True
c. Not sure
d. Maybe
18). Light is incident on a flat surface, making an angle of 350 with the
normal line. What is the angle of reflection?
a. 550
b. 450
c. 250
d. 35o
19). Complete the sentence with the appropriate colour Green + Red =
a. Yellow
b. Black
c. Green
d. Magenta
20). Will the south pole of a bar magnet repel the south pole of an
electromagnet?
a. Yes
b. No
c. Sometimes, not always
d. depends on the shape of the magnet
(Total -20 x 2 =40marks)
PART- 2
Structure type Questions
This Question is Related to the Echo Sound
1. What is Echo Sound?
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(5marks)
2. What two factors can affect the echo Sound?
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3. Consider the following information and answer the question
Bats use echolocation to determine their distance from objects they cannot easily
see in the dark. The time between the emission of a high-frequency sound pulse (a
click) and the detection of its echo is used to determine such distances. A bat, flying
at a constant speed of 19.7 m/s in a straight line toward a vertical cave wall, makes
a single-clicking noise and hears the echo 0.17 s later. Assuming that she continued
flying at her original speed, how close was she to the wall when she received the
echo? (Assume the speed of sound is 343 m/s
Method:
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(10 marks)
Total = 20marks
Essay Type Questions
Answer the following Questions
Question No. 1:
(Total =20 marks)
Question No 2:
1. Label the cell organelles. (cell Membrane, Mitochondria, Vacuole,
Cytoplasm, Nucleus, Nucleolus, DNA)
2. Which type of cell is this?
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3. Write 2 differences between Animal and Plant Cell
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4. What is the structural Unit of the Cell?
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5. Which organell helps to do Photosynthesis?
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(Total =20Marks)
