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Subject :NSO    Class : Class 6

Select the option that correctly fills the blanks in the given sentences.
(A) (i) of a flax plant provides fibres.
(B) (ii) is the cheapest natural fibre.
(C) The process of separating cotton fibres from cotton seeds is called (iii).
(D) (iv) is obtained by spinning together a bunch of fibres.
(E) (v) is a blended fabric.
(F) The loose fluffy fibres are untangled and combed to form a long soft rope called a (vi).

(i) (ii) (iii) (iv) (v) (vi)
A Seed Jute Retting Yarn Terry-cot Sliver
B Stem Cotton Retting Yarn Terry-cot Sliver
C Seed Cotton Ginning Yarn Terry-cot Sliver
D Stem Jute Ginning Yarn Terry-cot Sliver


Ans 1:

Class : Class 7
The answer is b right?

Ans 2:

Class : Class 6
The answer is not b

Ans 3:

Class : Class 6

Ans 4:

Class : Class 7
Cotton is the cheapest right??

Ans 5:

Class : Class 6

Ans 6:

Class : Class 5

Ans 7:

Class : Class 5

Ans 8:

Class : Class 6
Answer is d

Ans 9:

Class : Class 5
Flax is obtained from stem and jute is the cheapest natural fibre . So , the answer is D

Ans 10:

Class : Class 6
The correct answer is (D) as jute is the cheapest fibre . and stem of the flax plant provides fibres

Ans 11:

Class : Class 6
i did c because they are from seeds too but most are stems so d

Ans 12:

Class : Class 6
Jute is the cheapest natural fibre,not cotton!

Ans 13:

Class : Class 6

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Subject :NSO    Class : Class 6

Consider the following statements (i - iv) and select the option that correctly identifies true (T) and false (F) ones.
(i) Angora wool is obtained from Angora sheep.
(ii) Spinning is the process of changing fibre into yarn.
(iii) Coir is obtained from fruits of Kapok tree.
(iv) The process of removing hair from the sheep is called shearing.
(v) Knitting can be done by using only one yarn.

(i) (ii) (iii) (iv) (v)
A F T F T T
B T F F T T
C F F T T T
D F F F T T


Ans 1:

Class : Class 6
correct answer is a

Ans 2:

Class : Class 6
angora wool is obtain by angora rabbit and not angora sheep. Coir is obtained by the husk of a coconut

Ans 3:

Class : Class 7

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Subject :NSO    Class : Class 6

Refer to the given flow chart and select the incorrect option regarding P, Q, R and S.


A P is a protein fibre whereas Q, R and S are cellulosic fibres.
B Retting is involved in processing of Q whereas ginning is involved in processing of S.
C P could be wool, Q could be jute, R could be sisal and S could be cotton.
D Fabrics made from P and S are excellent winter clothings whereas fabrics made from Q and R form excellent summer clothings.


Ans 1:

Class : Class 6
cotton fibre is obtained from the fruit of the cotton plant

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6

Ans 6:

Class : Class 8

Ans 7:

Class : Class 6

Ans 8:

Class : Class 6

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4

Ans 2:

Class : Class 8
Yesssssssssssss

Ans 3:

Class : Class 5
yessssssssssssssssss

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
The answer is option “c”. see it was boiling water, she poured first into container “a” so it will be having the highest temperature than she poured to container b than to c and finally to container d so during this experiment the boiling water goes to lowest temperature and the last container was container d . So container a will be having the highest temperature and container d will be having the lowest temperature.

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
Option D

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Subject :NSO    Class : Class 9

Refer to the given key and answer the following questions.
(i) Membrane with definite pores - P
(ii) Inner membrane with stalked particles - Q
(iii) Inner membrane connected into stacks like structures - R
(iv) Sac like organelle containing hydrolytic enzymes - S
(v) Membraneless organelle composed of one large and one small subunit. - T Select the option that correctly identifies any of these organelles.

A P - Nucleus, Q - Mitochondrion, S - Ribosome
B Q - Chloroplast, R - Mitochondrion, T - Ribosome
C R - Chloroplast, S - Lysosome, T - Ribosome
D P - Nucleus, Q - Chloroplast, R - Mitochondrion


Ans 1:

Class : Class 9
Option A

Ans 2:

Class : Class 10
opt c is correct

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Subject :NSO    Class : Class 6

A few statements about centrifugation method are given :
I. The mixture containing very small suspended particles is rotated at a high speed in a centrifuge machine.
II. The denser particles stay at the top.
III. The method is used to separate water from wet clothes in a washing machine.
IV. The method can be used in laboratories for separating plasma and platelets.
The correct statements are

A I and IV only
B I, II and III only
C II, III and IV only
D I, III and IV only


Ans 1:

Class : Class 6
The answer is A

Ans 2:

Class : Class 6
centrifugation is a process in which a substance is spun at a very high speed to separate minute particles. For eg. Blood is spun at a high speed to separate particles such as red and white blood cells, plasma platelets, and plasma.

Ans 3:

Class : Class 6
What is centrifugation

Ans 4:

Class : Class 6
the answer is A.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
The question has all mirror images...... So answer has to be a mirror image.

Ans 2:

Class : Class 5
option c is opposite like all the letters in the figure

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
Yes , the answer is C .

Ans 5:

Class : Class 5
becase in the figure all the letters seem to be in the opposite direction while options a b and d are not showing them in th opposite direction and option c is showing

Ans 6:

Class : Class 5
c as it is facing opposite side

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Subject :NSO    Class : Class 3

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