National Science Olympiad Forum By SOF Olympiad Trainer - Page 275

User Forum

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
why

Ans 2:

Class : Class 6
Answer is B 1.92 sec

Ans 3:

Class : Class 6
answer is d only.it is right

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Answer is. A . correct explanation is on the answer .metals expand on heating !

Ans 2:

Class : Class 6
Hey! They have given contract see properly!

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Small Intestine

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7

Ans 2:

Class : Class 3
Plants grow well in it since they can retain water and are loosely held

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7
Plants grow well in loamy soil so the option A should have loamy soil as the correct answer.

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 5
Polybags can never be incinerated ! pls check answers and dont confuse students

Ans 2:

Class : Class 7

Ans 3:

Class : Class 5
Therefore none of the answers are right because tea leaves and polybags are are never incinerated

Ans 4:

Class : Class 7

Ans 5:

Class : Class 10

Post Your Answer

Subject :NSO    Class : Class 8

Few Natural resources are classified as:

P. Exhaustible
Q. Inexhaustible

Some natural resources are
(i) Petrol, diesel
(ii) Coal, petroleum
(iii) Air, water
(iv) Cow dung cakes, sunlight
(v) Forests, minerals

Which of the following represents the correct match?

A P-(iii), (iv); Q-(i), (ii), (v)
B P-(i), (ii), (v); Q-(iii), (iv)
C P-(ii), (v), Q-(i), (iii), (iv)
D None of these is a correct match.


how is cow dung cake a inexaustible resource ?

Ans 1:

Class : Class 9
are forests and minerals really exhaustible resources?

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
how is cow dung cake an inexaustible resource?

Ans 4:

Class : Class 7
Forests and Minerals are DEFINETELY exhaustible resources, but Cow Dung Cakes are also exhaustable.

Ans 5:

Class : Class 8
How can cow dung cakes and forests and minerals be an exhaustible resource as cow dung cakes are available in abundance and it will be available till all the cows on the earth die and sane goes for the forests. Minerals are also available in abundance and they are definitely inexhaustible.

Ans 6:

Class : Class 8

Post Your Answer

Subject :NSO    Class : Class 3

Five children made the following statements about birds.
Ashok : All birds can fly.
Beena : All birds have a beak.
Ashu : All birds have a backbone.
Shuchi : All birds have an outer covering of feathers.
Siddhi : Most birds lay eggs, while some give birth to their young ones.
Whose statements about birds are true?

AAshok, Beena and Ashu only
BBeena, Ashu and Shuchi only
CAshok, Beena, Shuchi and Siddhi only
DBeena, Ashu, Shuchi and Ashok only


it was very hard

Ans 1:

Class : Class 5
B

Ans 2:

Class : Class 1
B

Ans 3:

Class : Class 3
Beena, Ashu and Shuchi because Kiwi, Ostrich, Emu cannnot fly Penguins have a thin coat of feathers All birds lay eggs THEY ALL HAVE BEAKS AND A BACKBONE

Ans 4:

Class : Class 3
b

Ans 5:

Class : Class 2
B

Ans 6:

Class : Class 6
B

Ans 7:

Class : Class 4
The correct answer is B.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
CWhen a bomb explodes,chemical energy stored in the chemicals that form the bomb converts into heat, sound and light energy.

Ans 2: (Master Answer)

Class : Class 1

C

When a bomb explodes, chemical energy stored in the chemicals that form the bomb converts into heat, sound and light energy.


Post Your Answer

Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1 : Silver objects become green and lose their shine with the passage of time.
Statement 2 : Silver reacts with carbon dioxide and moisture present in the atmosphere.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.


Ans 1:

Class : Class 8

Ans 2:

Class : Class 7
Silver turns black, not green. And also silver does not react with water. So, obviously D is the answer.

Ans 3:

Class : Class 5
Silver can also react with SO2, sulphur dioxide, to tarnish.

Ans 4:

Class : Class 9
ans D is the correct answer as silver turns black after reaction to hydrogen sulphide

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
20 mL multiplied by 10 equals 200 ml.. likewise, multiply 1 min by 10. the answer is 10 minutes or 600 seconds.

Post Your Answer