SOF - NSO PDF Sample Papers for Class 7

Resources:

Class 7 sample paper & practice questions for National Science Olympiad (NSO) level 1 are given below. Syllabus for level 1 is also mentioned for these exams. You can refer these sample paper & quiz for preparing for the exam.

Sample Questions from Olympiad Success:

Q.1

Q.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	Choose the correct option and complete the following sentence: The tiny pores in the leaves of the plants used for the exchange of gases are ____________.
a)	stomata
b)	tracheae
c)	chloroplast
d)	spiracles

Q.2	Divya while studying the circuit of an electric fan observes that a plug connected to a fan contains a 3 A fuse. Why is the fuse needed?
a)	To reduce the voltage across the fan.
b)	To protect the fan from damage caused by a large current
c)	To make it easier for the current to flow
d)	To decrease the resistance of the circuit

Q.3	Select a suitable figure from the four alternatives that would complete the figure matrix:
a)	1
b)	2
c)	3
d)	4

Q.4	In summers, if milk is not refrigerated, it becomes sour. Which of the following is added by milkmen to fresh milk to prevent the milk from spoiling? (NSO, 2011)
a)	Caustic soda
b)	Potash alum
c)	Baking soda
d)	Lime water

Q.5	If addition stands for S, subtraction stands for A, multiplication stands for D and division stands for M then, 24 S 34 A 28 M 7 D 4 =?
a)	12
b)	18
c)	54
d)	42

Q.6	If a, b, c, d stands for addition, subtraction, multiplication and division respectively then, 12 d 4 c 7 a 24 b 11 =?
a)	34
b)	6
c)	21
d)	45

Q.7	A sea breeze is caused due to __________.
a)	convection
b)	conduction
c)	radiation
d)	All of these

Q.8	Dia was performing an experiment which includes the following steps: Step 1: Two drops of sulphuric acid were added to 1 g of copper sulphate powder and then a small amount of hot water was added to dissolve it. Step 2: On cooling, beautifully blue coloured crystals got separated. Identify the changes that took place in step 1 and step 2.
a)	Step 1 - Physical change, Step - 2 Chemical change
b)	Step 1 - Chemical change, Step - 2 Chemical change
c)	Step 1 - Physical change, Step - 2 Physical change
d)	Step 1 - Chemical change, Step - 2 Physical change

Q.9	Find out the two signs to be interchanged for making following equation correct: 6 / 3 + 2 - 8 x 6 = 2
a)	+ & x
b)	- & /
c)	% & /
d)	x & /

Q.10	A carnivore with stripes on its body moves very fast while catching its prey. Where does it is most likely to be found?
a)	Polar regions
b)	Oceans
c)	Deserts
d)	tropical rainforests