DCOA Mixed Practice Test #270

Question 1

Types of WBCs:

Accepted Answer

5 — 5 types: neutrophils, lymphocytes, monocytes, eosinophils, basophils.

Answer

3

Answer

7

Answer

10

Question 2

The "Kerala Model of Development" is most accurately defined by its distinctive approach, characterized by a unique combination of factors. Which of the following statements best encapsulates this defining characteristic?

Accepted Answer

B. Achieving exceptional human development indicators through extensive public action and social investments, even with moderate economic growth. — The Kerala Model is renowned for its remarkable achievements in human development, such as high literacy rates, low infant mortality, and high life expectancy, achieved primarily through strong public action, land reforms, and significant social investments, often predating substantial economic growth. This distinguishes it from models that prioritize economic growth first to fund social welfare.

Answer

A. Prioritizing rapid industrialization and high per capita income growth to fund social welfare programs.

Answer

C. Eliminating poverty and unemployment entirely through a self-reliant agrarian economy, independent of external remittances.

Answer

D. Relying primarily on private sector investments and market forces to drive improvements in health and education outcomes.

Question 3

Agni-V range:‌​‍

Accepted Answer

5000 km — Intercontinental ballistic missile with 5000+ km range.‌​‍

Answer

7000 km

Answer

3000 km

Answer

4000 km

Question 4

Willingdon Island in Kochi is:

Accepted Answer

An artificial island — Willingdon Island is the largest artificial island in India, created during the construction of Kochi port in 1933.

Answer

A natural island

Answer

A coral island

Answer

A volcanic island

Question 5

HTTP default port:‌​‍

Accepted Answer

80 (HTTPS: 443) — Common: FTP 21, SSH 22, SMTP 25, DNS 53, HTTP 80, HTTPS 443, MySQL 3306. ‌​‍Stateless protocol.

Answer

25

Answer

3306

Answer

21

Question 6

PCR (Polymerase Chain Reaction) is used for:‌​‍

Accepted Answer

DNA amplification in vitro — Kary Mullis (Nobel 1993). ‌​‍Uses Taq polymerase (heat-stable). Denaturation 94°C, annealing 55°C, extension 72°C.

Answer

Protein synthesis

Answer

DNA degradation

Answer

Only sequencing

Question 7

Pepsin in the stomach digests:‌​‍

Accepted Answer

Proteins — Pepsin (activated from pepsinogen by HCl) breaks proteins into peptides.‌​‍

Answer

Starch

Answer

Nucleic acids

Answer

Fats

Question 8

A mixture of iron filings and sulphur powder can be separated by:‌​‍

Accepted Answer

Magnetic separation (for iron) — Iron filings attracted by magnet; sulphur left behind.‌​‍

Answer

Distillation

Answer

Decantation

Answer

Filtration

Question 9

Kerala's Human Development Index rank in India:‌​‍

Accepted Answer

1st — Kerala ranks 1st in HDI among Indian states.‌​‍

Answer

15th

Answer

10th

Answer

5th

Question 10

Plasma percentage in blood:

Accepted Answer

55% — About 55% is plasma.

Answer

40%

Answer

70%

Answer

90%

DCOA Mixed Practice Test #270