National Science Olympiad Forum By SOF Olympiad Trainer

Dishita Saha from Mother Teresa Public School, Delhi

Subject :NSO Class : Class 7

X is present in the stomach. However, presence of excess of it causes indigestion, which requires the intake of milk of magnesia to undo the effect of X. What is X? (A) HCl (B) H2SO4 (C) NaOH (D) KOH

Ans 1:

Pranathi from GIIS, Kuala Lumpur

Class : Class 7

A

Ans 2:

Himanshu soni from School of manners and education, Mathura

Class : Class 7

It is HCL mean hydrochloric acid.

Ans 3:

Pisal Dhruv from Veer Bhagat Singh International School, Mumbai

Class : Class 7

the correct answer to this question is HCL (hydrochloric acid)

Ans 4:

Abhishek Yasraj from DPS, Bhopal

Class : Class 7

It's HCL

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Dishita Saha from Mother Teresa Public School, Delhi

Subject :NSO Class : Class 7

The temperature at which no more energy can be removed from matter is called (A) Absolute zero (B) Boiling point (C) 32º F (D) 32°C

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Bhavik Bhat from The Gurukul Foundation School, Kashipur

Subject :NSO Class : Class 5

Which among the following materials are biodegradable wastes?

A a , c and e
B b , d and f
C a , b, c and e
D a , c, d and f

Ans 1:

Ujjwal Upadhyay from Navy Children school, Vasco

Class : Class 6

D is the answer.

Ans 2:

Ujjwal Upadhyay from Navy Children school, Vasco

Class : Class 6

D is the answer.

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Saanvi from Dehli Public School , Gurugram

Subject :NSO Class : Class 7

Count the number of triangles in the given figure.

A22
B20
C14
DNone of these

There are 28 triangles in this figure

Ans 1:

Darsh Karmarkar from The Bishop Co Ed School Pune, Pune

Class : Class 10

Ans 2:

Shayan Bari from Kendriya Vidyalaya, Katihar

Class : Class 7

None of these should be an option.

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Dishita Saha from Mother Teresa Public School, Delhi

Subject :NSO Class : Class 7

What is the difference between nova and supernova

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Priyal Palekar from Lodha World School, Thane

Subject :NSO Class : Class 8

Two series in two rows are given below. In the first row, a full series is given which follows a specific pattern. The second row has a series, similar to the first series but only first element of this series is given, followed by (i), (ii), (iii), (iv) and (v), representing the subsequent elements. Complete the series and answer the question that follows :

A21
B23.5
C19.5
D16

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Ans 1:

Priyal Palekar from Lodha World School, Thane

Class : Class 7

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PRIYANSHI SHARMA from DPS NOIDA, NOIDA

Subject :NSO Class : Class 2

Rohan made four groups each with two activities of similar kind, but he made one mistake while pairing activities in one of the groups. Select the INCORRECT group.

A Ludo and Carrom
B Table tennis and Polo
C Billiards and Chess
D Cricket and Football

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Ans 1:

PRIYANSHI SHARMA from DPS NOIDA, NOIDA

Class : Class 2

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AARNA Kapse from The swaminarayan school, Nagpur

Subject :NSO Class : Class 2

Study the given flow chart. Identify one example of the following and select the correct option.
I. 'P' animals that eats the flesh of dead animals and 'R' animals that gives wax.
II. 'Q' and 'S' animals.

(a) P- CrocodileQ-Horse R-Giraffe S-Chicken
(b) P- Hyena Q-Donkey R-Honeybee S-Hen
(c) P- Jackal Q-Elephant R-Silkworm S-Goat
(d) P- Vulture Q-Camel R-Sheep S-Snake