DCOA Mixed Practice Test #584

Question 1

The SI unit of amount of substance is:‌​‍

Accepted Answer

Mole — 1 mole = 6.022 × 10²³ entities (Avogadro's number, NA). ‌​‍Fundamental SI unit since 1971.

Answer

Gram

Answer

Litre

Answer

Kilogram

Question 2

Municipal Corporations:‌​‍

Accepted Answer

6 — 6 (TVM, Kochi, Kozhikode, Thrissur, Kollam, Kannur).‌​‍

Answer

4

Answer

5

Answer

7

Question 3

Which is NOT an Ayurvedic text?

Accepted Answer

Mukundamala — 'Mukundamala' is a Sanskrit devotional poem by King Kulasekhara — not an Ayurvedic text.

Answer

Mathangaleela

Answer

Aalathur Manipravaalam

Answer

Yogamritham

Question 4

All the following are noble metals EXCEPT:‌​‍

Accepted Answer

Mercury — Gold, silver and platinum are noble metals; mercury is a transition metal (liquid at room temperature).‌​‍

Answer

Gold

Answer

Platinum

Answer

Silver

Question 5

The 'Kudumbashree' initiative in Kerala primarily aims to:

Accepted Answer

B. Empower women in agriculture by providing microfinance and self-help groups — Kudumbashree is a poverty alleviation and women empowerment program that integrates microfinance, entrepreneurship, and self-help groups, with a significant focus on agriculture. While it promotes organic farming, its primary goal is women's empowerment. The other options are not its core objectives.

Answer

A. Promote organic farming through subsidies and training

Answer

C. Develop high-yield crop varieties resistant to pests

Answer

D. Establish cooperative farming societies for large-scale production

Question 6

Beri-beri is caused by deficiency of:‌​‍

Accepted Answer

Vitamin B₁ (thiamine) — Thiamine deficiency → beri-beri (nervous/cardiac symptoms).‌​‍

Answer

Vitamin K

Answer

Vitamin C

Answer

Vitamin A

Question 7

A rainbow is formed by:‌​‍

Accepted Answer

Refraction, dispersion and total internal reflection in water droplets — Sunlight refracts entering droplet, disperses, undergoes internal reflection, refracts again on exit.‌​‍

Answer

Refraction only

Answer

Reflection only

Answer

Diffraction

Question 8

A patient's liver function test results show significantly elevated Alanine Aminotransferase (ALT) and Aspartate Aminotransferase (AST) levels. What does this finding primarily indicate?

Accepted Answer

C. Hepatocellular damage. — ALT and AST are enzymes predominantly found in liver cells. When liver cells are damaged, these enzymes leak into the bloodstream, causing elevated serum levels. Therefore, significantly high ALT and AST levels are strong indicators of hepatocellular (liver cell) damage. While other conditions can affect these, direct damage to liver cells is the primary implication.

Answer

A. Impaired kidney function.

Answer

B. Biliary obstruction.

Answer

D. Pancreatic inflammation.

Question 9

A patient's arterial blood gas (ABG) analysis reveals a pH of 7.25 and a low bicarbonate (HCO3-) level. This pattern is most consistent with which acid-base disturbance?

Accepted Answer

D. Metabolic acidosis — A pH of 7.25 indicates acidosis (normal range is 7.35-7.45). A low bicarbonate (HCO3-) level is the primary indicator of a metabolic component to the acid-base disturbance. Therefore, a low pH due to reduced bicarbonate concentration is characteristic of metabolic acidosis. Respiratory acidosis would show a high partial pressure of carbon dioxide (pCO2).

Answer

A. Respiratory acidosis

Answer

B. Metabolic alkalosis

Answer

C. Respiratory alkalosis

Question 10

India's retail inflation (CPI) in March 2026 was:‌​‍

Accepted Answer

3.4% — CPI inflation edged up to 3.4% in March 2026 per NSO data, well within RBI's 2-6% target band.‌​‍

Answer

2.8%

Answer

3.1%

Answer

4.2%

DCOA Mixed Practice Test #584