National Science Olympiad Forum By SOF Olympiad Trainer

Rithvik from BVM Global, Chennai

Subject :NSO Class : Class 7

Consider the following statements (I-IV) and fill in the blanks by choosing the appropriate option.

I. An antacid such as P is used to cure indigestion.
II. Lime water contains Q , which turns milky with carbon dioxide.
III. Soap solution is basic due to presence of R . It turns turmeric stain of shirt to red.
IV. Baking soda is S which reacts with vinegar to evolve carbon dioxide gas.

	P	Q	R	S
A	Milk of magnesia	Calcium hydroxide	Sodium hydroxide	Sodium hydrogen carbonate
B	Calcium hydroxide	Milk of magnesia	Sodium hydroxide	Sodium hydrogen carbonate
C	Sodium hydroxide	Sodium hydrogen carbonate	Calcium hydroxide	Milk of magnesia
D	Sodium hydrogen carbonate	Calcium hydroxide	Milk of magnesia	Sodium hydrogen carbonate

i dont understand

View All Answers (1)

Ans 1:

Amlan choudhury from GD Birla center for education , Kolkata

Class : Class 7

Utdd7rufu6f7fyi

Submit Your Answers

Post Your Answer

RAGHAV VARSHNEY from CITY MONTESSORI SCHOOL GOMTINAGAR LUCKNOW, Lucknow

Subject :NSO Class : Class 4

Select a figure from the options which when placed in the blank space of the given figure would complete the pattern.

A
B
C
D

View All Answers (9)

Ans 1:

Ayushmaan Nautiyal from MVN, Faridabad

Class : Class 5

Ans 2:

Reyansh Modumudi from Skill stork international school, Warangal

Class : Class 2

stupid admin , stupid admin !

Ans 3:

Vishnuteja V from BVBARRS, Hyderabad

Class : Class 6

Me too.The figure is in the solution not in the MCQ question paper

Ans 4:

Aayush Shere from City Pride School, Ravet, Pune

Class : Class 4

guys have patience , report the error in error setion.

Ans 5:

Samvita Patil from NHVPS, Bangalore

Class : Class 7

where the heck is the figure!!!

Ans 6:

Krishiv Chandan Sukul from Seven 11 Scholastic School, Mumbai

Class : Class 6

Ans 7:

RC from Vibgyor, Navi Mumbai

Class : Class 8

they didn't show any "pattern"????????????????????????????????????????????????????????????????????

Ans 8:

Aayush Shere from City Pride School, Ravet, Pune

Class : Class 4

Ans 9:

Krishiv Chandan Sukul from Seven 11 Scholastic School, Mumbai

Class : Class 6

Darn figure! How to get da answer man?

Submit Your Answers

Post Your Answer

Varnika Girish from Dimension Intermational School, Singapore

Subject :NSO Class : Class 3

Refer to the given figures showing different types of bird's nests and answer the questions that follow.

1. Which of these nests belongs to a bird that uses its beak like a needle to sew its nest?
2. Which of these nests belongs to a bird that has two toes in the front and two toes at the back?

A1-d, 2-e
B1-g, 2-d
C1-f, 2-g
D1-d, 2-f

View All Answers (1)

Ans 1:

Varnika Girish from Dimension Intermational School, Singapore

Class : Class 2

Submit Your Answers

Post Your Answer

Abhiram Yerra from Vibgyor High, Mumbai

Subject :NSO Class : Class 1

______ is an example of pulses.
A
B
C
D

What is option A and what is option D

View All Answers (0)

Submit Your Answers

Post Your Answer

Abhiram Yerra from Vibgyor High, Mumbai

Subject :NSO Class : Class 1

Select the odd one out on the basis of number of seeds present in it.

A
B
C
D

What is the fruit in option D

View All Answers (0)

Submit Your Answers

Post Your Answer

DEVAANGANA SARDAR from G.D. Birla Centre for Education, Kolkata

Subject :NSO Class : Class 5

Which of the following is a physical change?

ACooking of food
BTearing of paper
CBurning of wood
DGermination of seed

Ærrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrorrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

View All Answers (3)

Ans 1:

Shivam Ravi from Euroschool , Bangalore

Class : Class 7

Tearing of paper (Option B)

Ans 2:

DEVAANGANA SARDAR from G.D. Birla Centre for Education, Kolkata

Class : Class 7

Ans 3:

Shivam Ravi from Euroschool , Bangalore

Class : Class 7

Tearing of paper (Option B)

Submit Your Answers

Post Your Answer

S Malhotra from SFS , New Delhi

Subject :NSO Class : Class 3

Suhani wants to buy a piece of soft, red coloured cloth to make a cushion cover. Which sense organs would she use to choose the piece of cloth?
P. Ears Q. Skin R. Tongue S. Eyes

AP and S only
BQ and S only
CP and Q only
DP, Q, R and S

View All Answers (0)

Submit Your Answers

Post Your Answer

RAGHAV VARSHNEY from CITY MONTESSORI SCHOOL GOMTINAGAR LUCKNOW, Lucknow

Subject :NSO Class : Class 4

Refer to the given table and select the option which correctly identifies animals X and Y.

AX - Hen; Y - Silverfish
BX - Cockroach; Y - Mosquito
CX - Grasshopper; Y - Hen
DX - Butterfly; Y - Frog

View All Answers (1)

Ans 1:

SAMARPAN DAS from Notre Dame Academy, Salakati Kokrajhar

Class : Class 7

Submit Your Answers

Post Your Answer

Krishiv Kedia from Utpal shanghvi global school, Mumbai

Subject :NSO Class : Class 7

The different steps of water cycle are given below randomly. Select the option that shows the correct sequence of these steps.
(i) Water droplets in clouds join together to form large droplets.
(ii) Water vapour from water bodies and from leaves of plants get added to air.
(iii) Water vapour get cooled at height.
(iv) Rain water goes back to the water bodies.
(v) Drops of water fall on the Earth as rain.
(vi) Water droplets form a cloud.

A(ii) → (vi) → (iii) → (i) → (v) → (iv)
B(iii) → (ii) → (vi) → (i) → (v) → (iv)
C(ii) → (iii) → (vi) → (i) → (iv) → (v)
C(ii) → (iii) → (vi) → (i) → (v) → (iv)

should be c

View All Answers (0)

Submit Your Answers

Post Your Answer

AArav priyadarshi from Delhi Public School, Vindhyanagar

Subject :NSO Class : Class 6

A balloon attached to a hollow glass tube was submerged in a container of water as shown here. Rohan placed his mouth over the open end of the glass tube and blew air into it. He observed that the water level in the container rose.
This experiment tells us that air ___________.

(i) has mass
(ii) occupies space
(iii) has a definite volume
(iv) can be compressed

A(i), (ii) and (iv)
B(ii) and (iii)
C(i) and (ii)
D(ii) only

View All Answers (6)

Ans 1:

ARNAV MISHRA from delhi public school rohini, Delhi

Class : Class 6

yes

Ans 2:

Arihant Medhi from Dps Barasat, Kolkata

Class : Class 8

Ans 3:

advik vatsa from dps, Noida

Class : Class 7

Ans 4:

Nischith Kumar N from Christ Academy ICSE School, Bangalore

Class : Class 6

it shows that it occupies space but doesn't show that it has mass

Ans 5:

Eksha from JBM GLOBAL SCHOOL, Noida

Class : Class 6

Ans:3 nishcit is right

Ans 6:

Kunsh arora from M.G.N public school, Kapurthala

Class : Class 6

This experiment shows that air occupies space but doesn't show that air has mass

User Forum

Ans 1:

Ans 1:

Ans 2:

Ans 3:

Ans 4:

Ans 5:

Ans 6:

Ans 7:

Ans 8:

Ans 9:

Ans 1:

Ans 1:

Ans 2:

Ans 3:

Ans 1:

Ans 1:

Ans 2:

Ans 3:

Ans 4:

Ans 5:

Ans 6:

Related Links