XL Life Science- 2015 GATE Paper (Practice Test) - GATE MCQ

Tanya is older than Eric.

Cliff is polder than Tanya

Eric is older than cliff.

If the first two statements are true, then the third statement is :

Five teams have to compete in a league, with every team playing every other team exactly once, before going to the next round. How many matches will have to be held to completer the league round of matches?

Q No 6 - 10 carry Two marks each

Q.

Select the appropriate option in place of underlined part of the sentnce.

" Increased productivity necessary " reflects greater efforts made by the employee.

Given below are two statements followed by two conclusions. Assuming these statements to be true, decide which one logically follows.

Statements:

I. No manager is leader.

II All leaders are executives.

Conclusions:

I No manager is an executive

II No executive is a manager.

In the given figure angle  is a right angle, PS:QS= 3:1, RT: QT=5:2 and PU: UR = 1:1. if area of triangle QTS is 20 cm².  then the area of triangle PQR in cm² is ________________.

(Important : you should answer only the numeric value)

Right triangle PQR is to be constructed in the xy- plane so that the right angle is at P and line PR is parallel to the x-axis. The x and y coordinates of P,Q, and R are to be integers that satisfy the inequalities -4x5 and 6 y 16. How many diffrent triangles could be constructed with these properties ?

A coin is tossed thrice. Let X be the event that head occurs in each of the first two tosses. Let Y be the event that a tail occurs on the third toss. Let Z be the event that two tails occur in three tosses. Based on the  above information, which one of the following statements is TRUE?

Q. 11 – Q. 15 carry one mark each.

Q.

The molecule having net ‘non-zero dipole moment’ is

The Diels-Alder adduct from the reaction between cyclopentadiene and benzyne is

The number of possible enantiomeric pair(s) in HOOC−CH(OH)−CH(OH)−COOH is________

(Important : you should answer only the numeric value)

For the electrochemical reaction  the equilibrium constant at 25^o C is 1.7 x 10³⁷. The change in standard Gibbs free energy (ΔG^o) for this reaction at that temperature will be ________ kJ mol⁻¹ (up to one decimal place).
(Given: R = 8.314 JK⁻¹mol⁻¹)

Among the following diagrams, the one that correctly describes a zero order reaction
(X → product) is
(Given: [X]_o = initial concentration of reactant X; [X] = concentration of reactant X at time t
and t1/2 = half-life period of reactant X)

Q.16 – Q. 25 carry two marks each.

Q.

If the radius of first Bohr orbit is 0.53 Å, then the radius of the third Bohr orbit is

If 50 mL of 0.02 M HCl is added to 950 mL of H₂O, then the pH of the final solution will
be________

(Important : you should answer only the numeric value)

Stability of  follows the order
(Given: Atomic numbers of Cr = 24, Mn = 25 and Fe = 26)

Among the following pairs, the paramagnetic and diamagnetic species, respectively, are

In compounds K₄[Fe(CN)₆] (P) and Fe(CO)₅ (Q), the iron metal centre is bonded to

Among the following reactions, the one that produces achiral alcohol (after hydrolysis) is

The major product from the following reaction is

The order of resonance energy for the following molecules is

The molar enthalpy of vaporization for a liquid (normal boiling point = 78.3^oC) is 39 kJ mol⁻¹. If
the liquid has to boil at 25^o C, the pressure must be reduced to ________Torr (up to one decimal
place).

(Given: R = 8.314 JK⁻¹mol⁻¹; 1 atm = 760 Torr)

For the process,  and 1 atm, the correct statement is

Q. 26 – Q. 35 carry one mark each.

Q.

Which one of the following small molecules is a prerequisite for fatty acid oxidation?

Which one of the following bases is NOT found in the T-arm of an aminoacyl t-RNA?

Oxidation of one molecule of glucose via the glycerol-phosphate shuttle produces

Ribulose-5-phosphate epimerase is involved in which one of the following processes?

Proteolytic enzymes are usually biosynthesized as large, inactive precursors known as