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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
D

Ans 2:

Class : Class 4
This was a very hard question 🤨🤨🤨🤨

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
15.06g would be the correct answer

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

Given are five processes in the treatment of sewage. Arrange the processes in the correct order and select the correct option.
(i) In the digester tank, many anaerobic bacteria decompose the organic matter present in sludge to produce biogas.
(ii) Solids are separated from liquids by using screens.
(iii) The clarified water is passed into aeration tank that contains aerobic bacteria.
(iv) Impurities settle to the bottom of the tank in the form of sludge in sand and grit chambers.
(v) Suspended microbes settle down at the bottom as activated sludge and water is discharged into water bodies.

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


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Subject :NSO    Class : Class 5

Read the given statements and select the option which correctly fills the blanks.
(i) Natural disaster caused by earthquakes or volcanic eruptions under the sea and oceans is called 1.
(ii) Rainwater harvesting is used to minimize the effects of 2.
(iii) 3 is a tropical storm, characterised by fast spinning winds.

1 2 3
A Tsunami Drought Cyclone
B Cyclone Flood Hurricane
C Landslide Hurricane Typhoon
D Drought Flood Hurricane


Ans 1:

Class : Class 5
ANS IS AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
the answer is B

Ans 2:

Class : Class 5
Class:easy

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Subject :NSO    Class : Class 6

Select the incorrect statements.
I. In railway tracks, space is left between two rails at the joint to allow for the expansion of iron rails during winter.
II. For gases, solubility in water decreases with rise in temperature.
III. When mercury thermometer is used to measure the temperature, a chemical change takes place.
IV. At a particular temperature, the amount of salt or sugar that can be dissolved in 100 mL of water is same.
V. Galvanisation involves a physical change.

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


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