National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
z)fishing road is not used to change the speed of an object.y)the gears are used to increase the speed but not the direction'Thus the answer is B)Y and Z

Ans 3:

Class : Class 4
You are right Aryaveer and Shaurya Shinde. My answer is also B

Post Your Answer

Subject :NSO    Class : Class 8

Ans 1:

Class : Class 4
It should be a

Ans 2:

Class : Class 8
please explain

Ans 3:

Class : Class 8

Ans 4: (Master Answer)

Class : Class 1
The correct answer is C.

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 8
Answer is A (L) after the instruction the sequence is : N P S I L 4 W R 9 U F 7 S Y And then u get the answer

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
its [D]

Ans 2:

Class : Class 4
d

Ans 3:

Class : Class 5
its [D]

Ans 4:

Class : Class 6

Ans 5:

Class : Class 4
The correct option is -(D)

Ans 6:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 7

Read the following statements regarding waste-water treatment plant with one or two blanks. Select the option that correctly completes any two statements.
(i) ________ process allows settling of sand in the chambers.
(ii) The solid waste called _______settles down and lighter waste called ________ floats on the surface.
(iii) Secondary treatment involves use of_______.
(iv) ________ and ________ are used in tertiary treatment.

A (ii) sluge, scum; (iii) chemicals
B (iii) grit removal; (iv) chlorine, UV rays
C (ii) scum, sludge; (iii) bacteria
D (i) screening; (iv) aerobic, anaerobic bacteria


What is the answer for the fourth statement?

Ans 1:

Class : Class 7
SCUM,SLUDGE.

Ans 2:

Class : Class 8
yeah...sludge settles and scum floats.

Ans 3:

Class : Class 8

Ans 4:

Class : Class 7
good

Ans 5:

Class : Class 8
Sludge settles down while scum stays up

Ans 6:

Class : Class 9
chlorine and UV rays are tertiary treatment

Ans 7:

Class : Class 8
SLUDGE IS THE SOLID WASTE

Ans 8:

Class : Class 7
CSEDIMENTATIONSCUM.SLUDGE

Ans 9:

Class : Class 8
Sludge settles while scum floats .you are right

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
,bbb,bbb,sing it is bbbb,

Ans 2:

Class : Class 5
D

Ans 3:

Class : Class 5
it is B got it correct

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL

Ans 2:

Class : Class 5
NO

Ans 3:

Class : Class 4
fuck

Ans 4:

Class : Class 5
AA

Ans 5:

Class : Class 6
A

Ans 6:

Class : Class 5
Frogs breathe through gills when they are small and through lungs when adult.Then, how can frogs breathe through their skin and are "Y"

Ans 7:

Class : Class 7
the correct answer is a

Ans 8:

Class : Class 4
The correct answer is A because an adult frog breathes through both lungs and skin .

Ans 9:

Class : Class 7

Ans 10:

Class : Class 6
a.y

Ans 11:

Class : Class 6
a.y

Post Your Answer

Subject :NSO    Class : Class 9



Select the incorrect statement regarding this.

APlants require nitrogen mainly in the form of nitrate, which is exported from roots to shoots, reconverted to ammonium and assimilated as amino acid.
BRhizobia, cyanobacteria, nitrifying bacteria, symbiotic fungi, etc are used as biofertilizers.
CRhizobium bacteria produce N2 fixing root nodules in leguminous plants and thus help in replenishing nutrients in crop fields.
DMaterials of biological origin which are commonly used to maintain and improve soil fertility are green manures, biofertilizers and bioinsecticides.


Ans 1:

Class : Class 8
B

Ans 2:

Class : Class 8
D

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
the answer would be C as the hands of the clock shows rotational and periodic motion whereas the table top shows only rotational motion

Ans 2:

Class : Class 6
answer should be A as to and fro motion of a swing is not periodic motion

Ans 3:

Class : Class 6

Ans 4:

Class : Class 6
Answer should be c. It cannot be A as the motion of moon around earth is not rotational. it is circular

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 2
the correct answer is C.

Ans 3: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 4:

Class : Class 5
holi comes in March and spring starts from 2nd month that is feb. ans 3 is correct

Ans 5:

Class : Class 4
After Holi summer comes so it should be D;i.e.summer

Ans 6:

Class : Class 5

Post Your Answer