NEB Question Browser

.Write any two differences between somatic chromosome and sex chromosome.

Study the given concept map and name A and B.

Plaintext

[ A ] <------ Parthenogenesis ---- ( Honey ) ---- Fertilization ----> [ Fertile B ]

Write the name of main ore of iron.

Write down any two characteristics of the class Amphibia.

Prove that electric resistance () = .

A student of the class can see letters written on whiteboard when s/he sits on first bench and cannot see clearly when s/he sits on last bench. What type of lens is used to remove this defect?

What happens when bar a magnet is placed inside solenoid at rest?

What is the main cause of determination of future of universe?

Why are controlled variables important?

State Archimedes' principle.

Anu cannot distinguish red and green colour. What is the main cause of this problem?

j. A statement and two arguments are given below.

Statement: Stomach pesticide is a type of pesticide based on mode of action.

Argument 1: In this process, the insects die when they eat leaves and fruits of the plants treated by pesticides.

Argument 2: When these pesticides come into contact with air, poisonous gas is released, due to which the insects die.

(i) Statement and argument 2 are correct but argument 1 is incorrect

(ii) Statement and argument 2 are incorrect but argument 1 is correct

(iii) Statement and argument 1 are correct but argument 2 is incorrect

(iv) Statement and argument 1 are incorrect but argument 2 is correct

h. What is the most realistic theory about the origin of the universe?

(i) Heliocentric theory

(ii) Geocentric theory

(iii) Newton's theory

(iv) Big Bang theory

g. Sarthak named red, green, violet and blue coloured rays in dispersion of speed in a prism as , , and , respectively. Which is the correct order of speed made by him?

(i)

(ii)

(iii)

(iv)

f. Why is swimming in sea water easier than in river?

(i) Density of sea water is more than that of river.

(ii) Density of sea water is less than that of river.

(iii) Temperature of sea water is more than that of river.

(iv) Temperature of sea water is less than that of river.

c.When Sanju observed the specimen in the laboratory, she found that both of the organisms are long and cylindrical. She also found that organism A has cylindrical segmented body and organism B has not segmented body. By studying the above characteristics, which statement is true for these organisms?

(i) Organism A is hermaphrodite whereas organism B is unisexual.

(ii) Organism A is unisexual whereas organism B is hermaphrodite.

(iii) Organism A is diploblastic whereas organism B is triploblastic.

(iv) Organism A is triploblastic whereas organism B is diploblastic.

e.What would be the acceleration due to gravity of the meteor falling from 10000 km height from the centre.

(i)

(ii)

(iii)

(iv)

d. Cordyceps formed by the fusion of a caterpillar and fungi is shown in the figure. What is the interrelation between caterpillar and fungus in this process?

(i) Symbiotic

(ii) Parasitic

(iii) Saprotrophic

(iv) Commensalism

i. What is denoted by in the given reaction?

(i) Catalyst

(ii) Heat

(iii) Pressure

(iv) Light

b. Why is Cycas kept in gymnosperm?

(i) It bears flower and produces seed.

(ii) It bears flower and has pointed leaf.

(iii) It has cone instead of flower and seed is present inside fruit.

(iv) It has cone instead of flower and seed is naked.