Study the following statements and choose the correct option.
(i) Sulphur is present in two amino acids - cysteine and valine
(ii) Lower level of N, K, S, and Mo causes inhibition of cell division
(iii) Microbe that produces nitrogen fixing in the roots of non-leguminous plant Alnus is Frankia
(iv) Denitrification is carried by bacteria Nitrosomonas and Nitrobacter.

Q. Consider the following statement :
I. Two circles with centres A and B, radii 3 cm and 4 cm respectively intersect at two points C and D.
II. AC and BC are tangents to the two circles.
Then, length of chord CD will be___.
Choose the correct option.

Q.

Question 04(iv)

Tick (√) the statements that are correct.
Meat alone is sufficient to provide all nutrients to the body. ( )

Q. Each contains a question of two statements I and II, giving certain data. Select the correct answer from $\left(1\right)$ to $\left(4\right)$ depending on the sufficiency of data given in the statements to answer each question.
$1$. If I alone is sufficient and II alone is not sufficient to answer the question.
$2$. If II alone is sufficient and I alone is not sufficient to answer the question.
$3$. If both I and II together are sufficient but neither statement alone is sufficient to answer the question.
$4$. If both I and II together are not sufficient to answer the question and additional data specific to the question are needed.
What is the ratio of saving of A and B?
I. The ratio of income of A and B is $5:6$
II. The ratio of expenditure of A and B is $3:4$.

Q. Consider the following in respect of two events $A$ and $B$:
(1) $P(A$ occurs but not $B)=P(A)-P(B)$ if $B\subset A$
(2) $P(A$ alone or $B$ alone occurs) $=P\left(A\right)+P\left(B\right)-P(A\cap B)$
(3) $P(A\cup B)=P\left(A\right)+P\left(B\right)$ if $A$ and $B$ are mutually exclusive
Which of the above is/are correct?

Q.

Statement I: Energy is required by every living organism to survive and carry out different activities.
Statement II: Living organisms obtain this energy through nutrition.
Statement III: Nutrition alone is enough to provide the required energy to an organism.

Which of the following statement(s) is/are correct?