DCOA Mixed Practice Test #344

Question 1

Ezhuthachan's disciple:‌​‍

Accepted Answer

Ayyanar — Considered Melpathur was contemporary.‌​‍

Answer

Puntanam

Answer

Melpathur

Answer

Sooranad Kunjan Pillai

Question 2

Down syndrome:‌​‍

Accepted Answer

Trisomy 21 — Extra chromosome 21.‌​‍

Answer

XXY

Answer

Trisomy 18

Answer

Monosomy

Question 3

Which of the following structures prevents food from entering the trachea during swallowing?

Accepted Answer

C. Epiglottis — The epiglottis is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, which folds over the glottis (opening of the trachea) during swallowing to prevent food and liquid from entering the airways. The pharynx is a common passageway, the larynx contains the vocal cords, and the uvula is involved in soft palate movements and speech.

Answer

A. Pharynx

Answer

B. Larynx

Answer

D. Uvula

Question 4

Voltaire's famous quote defending free speech: 'I disagree with what you say but I will defend…'‌​‍

Accepted Answer

Your right to say it, to the death — Voltaire's iconic paraphrase: 'I disapprove of what you say, but I will defend to the death your right to say it.'‌​‍

Answer

The state

Answer

My beliefs

Answer

The truth

Question 5

Polysaccharide storage in animals:‌​‍

Accepted Answer

Glycogen — In liver and muscles. ‌​‍Plants store starch (amylose + amylopectin). Cellulose = plant cell wall.

Answer

Chitin

Answer

Cellulose

Answer

Starch

Question 6

Largest animal phylum is:‌​‍

Accepted Answer

Arthropoda — ~75% of animal species. ‌​‍Jointed legs, exoskeleton of chitin. Insects, crustaceans, arachnids.

Answer

Mollusca

Answer

Chordata

Answer

Annelida

Question 7

tRNA (transfer RNA) function is to:‌​‍

Accepted Answer

Carry specific amino acids to the ribosome — Each tRNA carries one amino acid and recognises a codon via its anticodon.‌​‍

Answer

Make proteins

Answer

Store genetic info

Answer

Break down RNA

Question 8

If A can do work in 10 days, B in 15 days, together in:

Accepted Answer

6 days — 1/10 + 1/15 = 3/30+2/30 = 5/30 = 1/6. Together = 6 days.

Answer

5 days

Answer

7 days

Answer

8 days

Question 9

Which is the French intelligence agency?‌​‍

Accepted Answer

DGSE — DGSE (Direction Générale de la Sécurité Extérieure) is France's external intelligence agency.‌​‍

Answer

CSIS

Answer

CIRO

Answer

MI6

Question 10

Who was appointed as CEO of NITI Aayog?‌​‍

Accepted Answer

Amitabh Kant — Amitabh Kant was appointed CEO of NITI Aayog in February 2016.‌​‍

Answer

Arun Jaitley

Answer

Amitabh Bachchan

Answer

Sania Mirza

DCOA Mixed Practice Test #344