LDC Mixed Practice Test #723

Question 1

Kerala's Rajya Sabha seats:‌​‍

Accepted Answer

9 — 9 seats.‌​‍

Answer

14

Answer

6

Answer

12

Question 2

Longest bone in human body:‌​‍

Accepted Answer

Femur (thigh) — Smallest: stapes (ear). Strongest: femur. Total bones in adult: 206.‌​‍

Answer

Fibula

Answer

Tibia

Answer

Humerus

Question 3

'The children are playing in the garden.' Tense:‌​‍

Accepted Answer

Present continuous — am/is/are + verb-ing = present continuous (actions happening now).‌​‍

Answer

Present perfect

Answer

Past simple

Answer

Simple present

Question 4

The largest ocean is:‌​‍

Accepted Answer

Pacific — Pacific Ocean is the largest and deepest ocean.‌​‍

Answer

Atlantic

Answer

Indian

Answer

Arctic

Question 5

One who speaks for others:‌​‍

Accepted Answer

Spokesperson — Speaks on behalf of a group.‌​‍

Answer

Mediator

Answer

Interpreter

Answer

Lawyer

Question 6

German silver contains:

Accepted Answer

Cu + Zn + Ni — German silver has no silver — it is an alloy of Cu, Zn, Ni.

Answer

Silver only

Answer

Silver + copper

Answer

Silver + zinc

Question 7

Figure of speech in 'Fair is foul, and foul is fair' (Shakespeare):‌​‍

Accepted Answer

Oxymoron / Paradox — Contradictory terms juxtaposed — oxymoron; the whole line is a paradox.‌​‍

Answer

Metaphor

Answer

Metonymy

Answer

Simile

Question 8

The body maintains a narrow pH range (7.35-7.45) in the blood through various buffer systems. Which of the following is the most significant extracellular buffer system responsible for regulating blood pH by buffering metabolic acids?

Accepted Answer

C. Bicarbonate buffer system — The bicarbonate buffer system, involving carbonic acid and bicarbonate ions, is the most crucial extracellular buffer system. It effectively neutralizes metabolic acids and bases, working in conjunction with the respiratory system (CO2 excretion) and renal system (bicarbonate reabsorption/excretion) to maintain blood pH.

Answer

A. Phosphate buffer system

Answer

B. Protein buffer system

Answer

D. Ammonia buffer system

Question 9

Odd one: Thermometer, Barometer, Compass, Stethoscope‌​‍

Accepted Answer

Stethoscope — Stethoscope is medical. ‌​‍Others measure physical quantities (temp, pressure, direction).

Answer

Thermometer

Answer

Barometer

Answer

Compass

Question 10

The Public Service Commission (Union PSC) was first established in the year:‌​‍

Accepted Answer

1926 — Public Service Commission established 1926; renamed UPSC in 1950.‌​‍

Answer

1950

Answer

1919

Answer

1947

LDC Mixed Practice Test #723