DCOA Mixed Practice Test #150

Question 1

Coir industry in Kerala is centred in:‌​‍

Accepted Answer

Alappuzha — Alappuzha is the hub of Kerala's coir (coconut fibre) industry.‌​‍

Answer

Kottayam

Answer

Kochi

Answer

Kozhikode

Question 2

Acceleration due to gravity on Earth is approximately:

Accepted Answer

9.8 m/s² — g ≈ 9.81 m/s² at sea level; often rounded to 10 m/s² for calculations.

Answer

1.6 m/s²

Answer

10 m/s² exactly

Answer

11.2 m/s²

Question 3

The 'Kerala Sahitya Akademi Award' is given annually for excellence in which field?

Accepted Answer

B. Literature and Creative Writing — The 'Kerala Sahitya Akademi Award' is conferred for outstanding contributions to literature and creative writing in Malayalam. The other fields are not the focus of this award, as per its established criteria.

Answer

A. Science and Technology

Answer

C. Sports and Physical Education

Answer

D. Industrial Development

Question 4

Who organised Savarna Jatha in Vaikom Satyagraha?

Accepted Answer

Mannathu Padmanabhan — Mannathu Padmanabhan led the Savarna Jatha (1924).

Answer

A.K. Gopalan

Answer

K. Kelappan

Answer

Chattampi Swamikal

Question 5

General formula of alkenes:‌​‍

Accepted Answer

CnH2n — One C=C double bond. Alkanes: CnH2n+2. Alkynes: CnH2n-2.‌​‍

Answer

CnH2n-2

Answer

CnHn

Answer

CnH2n+2

Question 6

An object weighs 20 N on Earth. Its mass is approximately (g = 10 m/s²):‌​‍

Accepted Answer

2 kg — m = W/g = 20/10 = 2 kg.‌​‍

Answer

0.2 kg

Answer

20 kg

Answer

200 kg

Question 7

In PowerPoint, Ctrl + M creates:‌​‍

Accepted Answer

New slide — Ctrl+M inserts a new slide in PowerPoint.‌​‍

Answer

New file

Answer

New animation

Answer

New shape

Question 8

Intrinsic semiconductors at absolute zero behave like:‌​‍

Accepted Answer

Insulator — No free electrons at 0 K. ‌​‍At higher T, covalent bonds break → some charge carriers. Conductivity rises with T (opposite of metals).

Answer

Metal

Answer

Conductor

Answer

Superconductor

Question 9

The chemical formula of common salt (sodium chloride) is:‌​‍

Accepted Answer

NaCl — Sodium chloride (common salt) is NaCl.‌​‍

Answer

Na₂CO₃

Answer

NaHCO₃

Answer

NaOH

Question 10

Kalam's major contribution to Indian defence was in:

Accepted Answer

Missiles (Agni, Prithvi) — Kalam spearheaded development of indigenous missile technology — hence 'Missile Man'.

Answer

Submarines

Answer

Fighter jets

Answer

Tanks

DCOA Mixed Practice Test #150