National Science Olympiad Forum By SOF Olympiad Trainer - Page 414

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PrasadKev from Narayan, Mumbai

Subject :NSO Class : Class 3

The states of matter in which water is present at 35°C and -10°C respectively are _______.

A Solid and liquid
B Liquid and solid
C Gas and solid
D Liquid and gas

Ans 1:

Aradhya Shankar from Vibgyor, Kolhapur

Class : Class 4

bbbb

Ans 2:

from , Ahmedabad

Class : Class 4

Ans b

Ans 3:

from , Ahmedabad

Class : Class 4

Ans b

Ans 4:

Divyanshi Rajashekar from Vidyashilp Academy, Bangalore

Class : Class 7

b option

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ibaad mohammed from karnataka public school, bangalore

Subject :NSO Class : Class 8

When two mirrors are inclined at an angle of 60°, the number of images formed is

A3
B4
C5
D6

can you explain this answer

Ans 1:

Kushi V from Jss Public School, bangalore

Class : Class 8

C. 5

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Pranav Shagrithaya from NPS Yelahanka, Bengaluru

Subject :NSO Class : Class 5

Which of the following is correct?

A Jaundice is not a communicable disease.
B Leprosy is a non-contagious disease of skin.
C Cholera spreads through contaminated air.
D Tetanus can occur due to entry of germs through cut skin.

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Ans 1:

Debarpan Das from Delhi Public School , Durgapur

Class : Class 9

Ans D

Ans 2:

Aneesh Pratihar from vibgyor high school, bangalore

Class : Class 5

Ans D

Ans 3:

Suvarna Krovvidi from AVN Vida School, Hyderabad

Class : Class 5

Ans 4:

bh from Asdfgh, Hyderabad

Class : Class 9

Ans 5:

Pranav Shagrithaya from NPS Yelahanka, Bengaluru

Class : Class 7

Ans 6:

Pranav Shagrithaya from NPS Yelahanka, Bengaluru

Class : Class 7

Hooooooooowwwwwwwwww!!!!!!!!!!!!!!!,!,

Ans 7:

Vihaan from Father Agnel, Noida

Class : Class 5

Ans 8:

AAYANSH DHRUV from Orchid The International, Bangalore

Class : Class 5

Ans C

Ans 9:

Debarpan Das from Delhi Public School , Durgapur

Class : Class 9

Ans D

Ans 10:

Jasmine Kaur from Venkateshwar International School , New Delhi

Class : Class 5

Ans 11:

Shahan Sengupta from BVM, Nagpur

Class : Class 8

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru

Subject :NSO Class : Class 7

Read the given passage with a mistake and select the option that corrects it.
During the process of breathing (inhalation), the diaphragm muscles contract and be comes dome shaped. At the same time, intercostal muscles contract to pull the ribs upwards. This increases the volume of the chest cavity. Subsequently the volume of lungs increases. As the air pressure in the lungs decreases, air moves into the lungs through the air passage.

A The diaphragm muscles contract and become flat.
B This decreases the volume of the chest cavity.
C As the air pressure in the lungs increases, air moves into the lungs through the air passage.
D At the same time, intercostal muscles contract to pull the ribs downwards.

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Ans 1:

Dhairya Vinayak from Loyola High School, Patna

Class : Class 8

OPTION A

Ans 2:

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru

Class : Class 10

Ans 3:

Ambar and Adwita from Suncity School, Gurgaon

Class : Class 8

Option A

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru

Subject :NSO Class : Class 7

Which one of the following special characteristics of animals does not help them to survive?

A Camels have long eyelashes to prevent sand from entering their eyes.
B Rhinoceroses keep their bodies cool by wallowing in mud.
C Desert foxes have large ears to help them lose heat easily.
D Kangaroo rats store fats in their humps which can be changed into water

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Ans 1:

SUNIL KHANDELWAL from Bhartiya Bhavans, Kolkata

Class : Class 7

explain

Ans 2:

Sargah Surya from bgsnps, Bengaluru

Class : Class 4

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru

Subject :NSO Class : Class 7

Megha conducted an experiment to find out the requirements for photosynthesis. She subjected the plants to different conditions as shown in the table below. Study the table and use it to answer the question.

Which of the following variables should be kept constant to conduct a fair test?
(i) Type of plant
(ii) Amount of soil
(iii) Size of pot
(iv) Type of soil

A i and ii only
B ii and iv only
C i, ii and iii only
D All of the above

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru

Subject :NSO Class : Class 7

Which of the following is a different type of change than the others?

A Nimit leaves a piece of bread in the toaster for too long. The bread becomes black and kitchen fills with smoke.
B Madhu forgot to dry the bread knife after washing. Reddish brown spots appeared on it.
C Renu kept few naphthalene balls in her almirah. After few days, the balls disappeared from the almirah.
D A plant collects sunlight and prepare food by photosynthesis.

View All Answers (1)

Ans 1:

Soumalya Samanta from Future Campus School, Sonarpur

Class : Class 7

CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru

Subject :NSO Class : Class 7

When water is heated from 0°C to 10°C, its volume ________.

A Increases
B Decreases
C Does not change
D First decreases and then increases.

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Ans 1:

Anikait Yadav from MLZS, Chennai

Class : Class 7

Ans 2:

Anikait Yadav from MLZS, Chennai

Class : Class 7

Ans 3:

Anikait Yadav from MLZS, Chennai

Class : Class 7

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Harsh Sobti from the samhita academy, BLR

Subject :NSO Class : Class 4

Study the given word-chop table. Which of the following sets of boxes will give the names of a cooking method (X) and a food preservation method (Y) respectively?

	X	Y
A	11 and 7	9 and 12
B	4, 6 and 7	3, 5 and 7
C	1, 12 and 7	2, 8 and 7
D	6 and 10	4 and 8

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Ans 1:

vaishnavi from Natinal centre for excellence, BENGALURU

Class : Class 4

Ans 2:

Aditya from Dps greater faridabad, Faridabad

Class : Class 5

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Prithu Ashish from Vibgyor High Bannerghatta, Bangalore

Subject :NSO Class : Class 6

How does the Heart beat?

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