DCOA Mixed Practice Test #219

Question 1

An ionic bond forms when:‌​‍

Accepted Answer

Electrons are transferred from one atom to another — Metal loses electron(s), non-metal gains them — forming ions attracted electrostatically.‌​‍

Answer

Protons combine

Answer

Electrons are shared between atoms

Answer

Atoms fuse

Question 2

A fuse wire is characterized by:‌​‍

Accepted Answer

High resistance and low melting point — Fuse wire has high resistance (heats up quickly) and low melting point (so it melts to break the circuit during overload).‌​‍

Answer

Low resistance and low melting point

Answer

Low resistance and high melting point

Answer

High resistance and high melting point

Question 3

Father of taxonomy:

Accepted Answer

Linnaeus — Carolus Linnaeus.

Answer

Darwin

Answer

Mendel

Answer

Aristotle

Question 4

India observes 'National Space Day' on:‌​‍

Accepted Answer

23 August — National Space Day — 23 August — marks Chandrayaan-3's Moon landing (2023).‌​‍

Answer

15 August

Answer

18 May

Answer

19 April

Question 5

CM Odisha 2024:‌​‍

Accepted Answer

Mohan Charan Majhi — BJP's Majhi — ended 24-year Patnaik era.‌​‍

Answer

Naveen Patnaik

Answer

VK Pandian

Answer

Other

Question 6

A patient frequently experiences severe anxiety attacks without any identifiable external trigger or conscious reason. A psychodynamic perspective would suggest that these attacks might be rooted in which part of the mind?

Accepted Answer

C. The unconscious mind, containing repressed conflicts or unresolved issues. — In psychodynamic theory, the unconscious mind holds thoughts, memories, and desires that are outside of conscious awareness but can still profoundly influence behavior and emotional states. Unexplained anxiety attacks are often attributed to repressed conflicts or unresolved issues residing in the unconscious. The conscious mind deals with current awareness, the preconscious with accessible memories, and the superego with moral judgments.

Answer

A. The conscious mind, due to recent stressful events.

Answer

B. The preconscious mind, holding easily retrievable memories.

Answer

D. The superego, enforcing moralistic ideals.

Question 7

SA node of heart is called pacemaker because:‌​‍

Accepted Answer

Initiates heartbeat (myogenic, ~72/min at rest) — In right atrium. ‌​‍Signal to AV node → bundle of His → Purkinje fibres. Vagus nerve slows it.

Answer

Oxygenates blood

Answer

It receives all blood

Answer

Makes sound

Question 8

The National Health Mission (NHM) aims to achieve universal access to equitable, affordable, and quality healthcare services. Which of the following is NOT a core strategic approach or component of the NHM?

Accepted Answer

C. Focusing exclusively on tertiary care super-specialty services. — The National Health Mission (NHM) primarily focuses on strengthening primary and secondary healthcare, promoting RCH services, and addressing both communicable and non-communicable diseases. While tertiary care is part of the overall health system, NHM's core strategic approach is not *exclusively* focused on super-specialty services; it aims for comprehensive service delivery at all levels, with a strong emphasis on primary care.

Answer

A. Strengthening public health infrastructure at district and sub-district levels.

Answer

B. Promoting RCH (Reproductive and Child Health) services.

Answer

D. Addressing communicable and non-communicable diseases.

Question 9

A Primary Health Centre (PHC) is planning to conduct a mass drug administration (MDA) campaign for lymphatic filariasis. Which of the following is the MOST critical step before starting the campaign?

Accepted Answer

B. Training ASHAs and other health workers on drug administration and side effects — Training health workers on drug administration and management of side effects is critical to ensure safe and effective delivery of MDA. While survey (A) and awareness (D) are important, they are not the most critical step. Distributing mosquito nets (C) is not directly related to MDA for lymphatic filariasis.

Answer

A. Conducting a door-to-door survey to identify eligible individuals

Answer

C. Distributing free mosquito nets to all households

Answer

D. Organizing a community awareness programme on the benefits of MDA

Question 10

Refractive index of water is approximately:

Accepted Answer

1.33 — n_water ≈ 1.33; diamond ~2.42; glass ~1.5.

Answer

1.00

Answer

1.50

Answer

2.42

DCOA Mixed Practice Test #219