Among Mg, Cu, Fe, Zn the metal that does not produce hydrogen gas in reaction with hydrochloric acid is

(a) Cu

(b) Zn

(c) Mg

(d) Fe

What is the number of chromosomes in an individual with Turner’s syndrome?

(a) 44

(b) 45

(c) 46

(d) 47

Codon degeneracy means that

(a) several amino acids are coded by more than one codon

(b) one codon can code for many amino acids

(c) one amino acid can be coded by only one codon

(d) the codons are triplet nucleotide sequences

A majority of the tree species of peninsular Indian origin fruit in the months of

(a) April-May

(b) August-September

(c) December-January

(d) All months of the year

A quadrilateral has distinct integer side lengths. If the second-largest side has length 10, then the maximum possible length of the largest side is

(a) 25

(b) 26

(c) 27

(d) 28

Thermal expansion of a solid is due to the

(A)  symmetric characteristic of the inter atomic potential energy curve of the solid

(B)  asymmetric characteristic of the inter atomic potential energy curve of the solid

(C)  double well nature of the inter-atomic potential energy curve of the solid

(D)  Rotational motion of the atoms of the solid  

The polynomial equation x³ – 3ax² + (27a² + 9)x + 2016 = 0 has –

(A)  exactly one real root for any real a

(B)  three real roots for any real a

(C)  three real roots for any a  0, and exactly one real root for any a < 0

(D)  three real roots for any a ≤ 0, and exactly one real root for any a > 0

Let S = {1, 2, 3, …., 40) and let A be a subset of S such that no two elements in A have their sum divisible by 5. What is the maximum number of elements possible in A?

(a) 10

(b) 13

(c) 17

(d) 20

A two-digit number \(\overline{ab}\) is called almost prime if one obtains a two-digit prime number by changing at most one of its digits a and b. (For example, 18 is an almost prime number because 13 is a prime number). Then the number of almost prime two-digit numbers is

(a) 56

(b) 75

(c) 87

(d) 90

The element that combines with oxygen to give an amphoteric oxide is –

(A)   N

(B)  P

(C)  Al

(D)  Na