List of practice Questions

If $ cos^{-1}x+ cos^{-1}y+cos^{-1}z = 3 \pi$ then $ x(y+z) + y(x+z) + z(x+y) $equals to

If f(x)= $\begin{vmatrix} x-3 & 2x^2-18 & 2x^3-81\\ x-5 & 2x^2-50 & 4x^3-500\\ 1 & 2 & 3 \\ \end{vmatrix}$ then f(1). f(3) + f(3). f(5) + f(5). f(1) is

$ \frac{\sqrt2 cosx -1}{cot x-1}$ is equal to

The negation of the statement “For every real number $x ; x^2 + 5$ is positive” is

Let f : R ⇢ R be given f(x) = tan x. Then $f^{-1}(1)$

The sequence of communities of primary succession in water is

Match the type of adaptation given in List-I with their examples given in List-II. Select the option showing correct combination.

List-1 (Types of adaptation)		List-II (Examples)
1	Biochemical adaptation	p	Desert lizards
2	Behavioural adaptation	q	Deep sea fishes
3	Physiological adaptation	r	Opuntia
4	Morphological adaptation	s	Kangaroo rats

Choose the correct option from the following:

The annual net primary productivity of the biosphere is approximately

enzyme

Read the following statements:
Statement I: Morphine is obtained by acetylation of Heroin.
Statement II: Cannabinoids are known for their effect on cardiovascular system
Which of the following options is correct with reference to these statements?

Mule is the result of

Identify the bacterial disease among the following:

Match the nutrients given in List-I with the source in List-II:

List I		List II
1	Vitamin A	p	Bitter gourd
2	Single cell protein	q	Beans
3	Vitamin C	r	Carrots
4	Protein	s	Spirulina spp

Choose the correct option from the following:

The chemical substances which are produced by some microbes which can kill or retard the growth of other microbes are known as

Select the correct statement from the following:

Test cross in pea plant is

The genotype ratio of incomplete dominance is

Find the incorrect statement among the following:

In a dihybrid cross between a true breeding round yellow seeded and true breeding wrinkled green seeded pea plant, the ratio of segregation of round and wrinkled seed traits in $F_2$ is

Stanley Miller simulated the conditions of pre – biotic earth using spark – discharge apparatus. Which organic compounds were observed by him on analysing the end product of his experiment?

Most ape - like ancestral primate was

The principle of vaccination is based on which property of immune system?

The Government of India legalised MTP with some strict regulations in the year

The process in which a small part of the vas deferens is removed or tied up through a small incision, is called

Hydra reproduces asexually by producing