DCOA Mixed Practice Test #649

Question 1

The Kerala State Planning Board is chaired by:‌​‍

Accepted Answer

CM — CM is ex-officio Chairman. The Vice Chairman is the functional head.‌​‍

Answer

Governor

Answer

Finance Minister

Answer

Vice Chairman

Question 2

Sustainable Aviation Fuel (SAF) blending, recently cleared by Cabinet, is being done with which fuel?‌​‍

Accepted Answer

Aviation Turbine Fuel (ATF) — The Cabinet approved ethanol blending with ATF under the SAF initiative.‌​‍

Answer

Diesel

Answer

CNG

Answer

LPG

Question 3

Which of the following are the core principles of insurance regulated by IRDAI?‌​‍

Accepted Answer

Utmost good faith, insurable interest, indemnity, subrogation — Uberrimae fidei. ‌​‍Life insurance exception to strict indemnity. Contribution principle for overlapping coverage.

Answer

Loyalty

Answer

Random

Answer

Profit

Question 4

Fat-soluble vitamins:‌​‍

Accepted Answer

A, D, E, K — A, D, E, K are fat-soluble. B, C are water-soluble.‌​‍

Answer

B and C

Answer

Only A

Answer

Only D

Question 5

Inductance is measured in:‌​‍

Accepted Answer

Henry — Henry (H) is SI unit of inductance; 1 H = 1 Wb/A.‌​‍

Answer

Farad

Answer

Weber

Answer

Ohm

Question 6

COVID-19 is caused by:‌​‍

Accepted Answer

SARS-CoV-2 virus — Novel coronavirus SARS-CoV-2.‌​‍

Answer

Bacteria

Answer

Protozoa

Answer

Fungus

Question 7

The modern periodic table organizes elements based on increasing atomic number, displaying clear periodic trends in properties. Considering the general trends for atomic radius and electronegativity, which of the following accurately identifies the element expected to have the largest atomic radius and the element expected to have the highest electronegativity among all stable elements?

Accepted Answer

B. Largest Atomic Radius: Francium (Fr); Highest Electronegativity: Fluorine (F). — Atomic radius generally increases down a group and decreases across a period, making Francium (Fr), located at the bottom-left, the element with the largest atomic radius. Electronegativity generally increases across a period and decreases down a group, with Fluorine (F), found at the top-right (excluding noble gases which typically do not have defined electronegativity values), having the highest electronegativity. Options A, C, and D incorrectly identify elements for these extreme properties or misstate the periodic trends.

Answer

A. Largest Atomic Radius: Helium (He); Highest Electronegativity: Francium (Fr).

Answer

C. Largest Atomic Radius: Chlorine (Cl); Highest Electronegativity: Cesium (Cs).

Answer

D. Largest Atomic Radius: Radon (Rn); Highest Electronegativity: Oxygen (O).

Question 8

Aadhaar is a:‌​‍

Accepted Answer

12-digit number — Aadhaar is a 12-digit unique identity number issued by UIDAI (Unique Identification Authority of India).‌​‍

Answer

6-digit number

Answer

10-digit number

Answer

16-digit number

Question 9

Tata group chairman:‌​‍

Accepted Answer

N Chandrasekaran — Chandrasekaran remains; Ratan Tata passed Oct 2024.‌​‍

Answer

Noel

Answer

JRD

Answer

Ratan Tata (passed away 2024)

Question 10

Socrates, Plato, Aristotle were:‌​‍

Accepted Answer

Greek philosophers in chronological succession — Socrates (c.470-399 BCE) → his student Plato (Academy) → Plato's student Aristotle (Lyceum, tutor to Alexander).‌​‍

Answer

Egyptians

Answer

Romans

Answer

Persians

DCOA Mixed Practice Test #649