DCOA Mixed Practice Test #529

Question 1

The pH value of pure water at 25 °C is:

Accepted Answer

7 — Pure water is neutral (pH = 7); pH <7 acidic, >7 basic.

Answer

0

Answer

10

Answer

14

Question 2

First Nipah outbreak Kerala:

Accepted Answer

2018 — May 2018 Kozhikode.

Answer

2020

Answer

2015

Answer

2023

Question 3

Normal urine output/day:‌​‍

Accepted Answer

1-1.5 L — 1-1.5 litres.‌​‍

Answer

5 L

Answer

3 L

Answer

500 ml

Question 4

Which planet is called the 'Red Planet'?‌​‍

Accepted Answer

Mars — Mars is called the Red Planet due to iron oxide on its surface.‌​‍

Answer

Venus

Answer

Jupiter

Answer

Saturn

Question 5

Hardy-Weinberg principle requires:‌​‍

Accepted Answer

No migration, no mutation, large random-mating population, no selection, no drift — Allele frequencies stay constant. ‌​‍p² + 2pq + q² = 1. Deviations indicate evolution.

Answer

Small population

Answer

Migration

Answer

Mutation

Question 6

Fort Kochi:

Accepted Answer

Ernakulam — Kochi's old European quarter.

Answer

Kozhikode

Answer

Kollam

Answer

TVM

Question 7

The density of pure water at 4 °C is:‌​‍

Accepted Answer

1 g/cm³ — Water has maximum density 1 g/cm³ (=1000 kg/m³) at 4 °C.‌​‍

Answer

0.5 g/cm³

Answer

1.5 g/cm³

Answer

10 g/cm³

Question 8

The Abbasid Caliphate (750-1258 CE) had its capital at:‌​‍

Accepted Answer

Baghdad — Abbasids built Baghdad (762 CE). ‌​‍Golden Age of Islamic civilization — House of Wisdom, translations of Greek texts, algebra, astronomy.

Answer

Damascus

Answer

Cairo

Answer

Medina

Question 9

Proper disposal of hospital waste, especially sharps and infectious materials, is essential to prevent:

Accepted Answer

B. Environmental pollution and disease transmission. — Improper disposal of hospital waste, particularly sharps and infectious materials, poses significant risks of environmental pollution and the transmission of infectious diseases to healthcare workers, waste handlers, and the general public. While other options might be indirect consequences, disease transmission is the most critical direct public health concern.

Answer

A. Increased administrative costs.

Answer

C. Reduced patient comfort.

Answer

D. Slower diagnostic turnaround times.

Question 10

Samata Sthal:‌​‍

Accepted Answer

Jagjivan Ram — Babu Jagjivan Ram.‌​‍

Answer

Bose

Answer

Patel

Answer

Ambedkar

DCOA Mixed Practice Test #529