VFA Mixed Practice Test #557

Question 1

Gandhi's autobiography:‌​‍

Accepted Answer

My Experiments with Truth — The Story of My Experiments with Truth.‌​‍

Answer

Discovery

Answer

Key to Health

Answer

Hind Swaraj

Question 2

Five kingdoms:

Accepted Answer

Monera, Protista, Fungi, Plantae, Animalia — Five-kingdom system.

Answer

Plants and Animals

Answer

Three kingdoms

Answer

Six kingdoms

Question 3

Chronic exposure to which heavy metal can lead to 'Minamata disease,' characterized by severe neurological damage?

Accepted Answer

D. Mercury — Minamata disease is a neurological syndrome caused by severe mercury poisoning, particularly methylmercury, often ingested through contaminated seafood. Lead poisoning (plumbism) causes CNS, GI, and hematological issues. Arsenic affects multiple organ systems, and cadmium toxicity can lead to 'Itai-Itai disease' affecting bones and kidneys.

Answer

A. Lead

Answer

B. Arsenic

Answer

C. Cadmium

Question 4

Which part of the plant is used in the preparation of 'Ipecac' syrup, a drug used to induce vomiting?

Accepted Answer

A. Root — Ipecac syrup is prepared from the dried root of Cephaelis ipecacuanha, which contains emetine, an alkaloid used as an emetic. The bark, leaf, and seed do not contain the active principles in sufficient quantity.

Answer

B. Bark

Answer

C. Leaf

Answer

D. Seed

Question 5

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 6

To promote moral reasoning, cultural awareness, and understanding of universal human values among elementary students, a teacher frequently incorporates short narratives into her lessons. Which literary form is most appropriate for achieving these particular educational objectives?

Accepted Answer

C. Traditional fables and folktales from diverse cultures. — Fables and folktales are short, often simple narratives that traditionally convey moral lessons and cultural insights, making them highly effective for teaching moral reasoning and universal human values to elementary students. They also introduce students to diverse cultural perspectives in an accessible narrative format, unlike factual biographies, complex philosophy, or current events.

Answer

A. Autobiographical accounts of famous scientists.

Answer

B. Excerpts from complex philosophical treatises.

Answer

D. Contemporary news reports on global political events.

Question 7

A light ray passes from air (refractive index = 1.00) into a glass slab (refractive index = 1.52) at an angle of incidence of 30°. What will be the angle of refraction inside the glass slab? (Use Snell's law: n₁ sinθ₁ = n₂ sinθ₂)

Accepted Answer

B. 25.4° — Using Snell's law: sinθ₂ = (n₁/n₂) * sinθ₁ = (1.00/1.52) * sin(30°) ≈ 0.3289, so θ₂ ≈ arcsin(0.3289) ≈ 19.2°. Option A (19.2°) is correct. Option B (25.4°) is a common miscalculation from incorrect substitution. Option C (30.0°) assumes no refraction. Option D (41.8°) results from reversing n₁ and n₂.

Answer

A. 19.2°

Answer

C. 30.0°

Answer

D. 41.8°

Question 8

Egyptian civilisation centred on which river?‌​‍

Accepted Answer

Nile — Herodotus called Egypt 'gift of the Nile.' Annual flooding fertilised land, enabled agriculture along narrow valley.‌​‍

Answer

Indus

Answer

Euphrates

Answer

Tigris

Question 9

A patient diagnosed with schizophrenia exhibits flat affect, alogia, and avolition. These symptoms are primarily categorized as:

Accepted Answer

B. Negative symptoms — Negative symptoms of schizophrenia involve a loss or decrease in normal functions and behaviors, such as flat affect (lack of emotional expression), alogia (poverty of speech), and avolition (lack of motivation). Positive symptoms, in contrast, are an excess or distortion of normal functions, like hallucinations and delusions.

Answer

A. Positive symptoms

Answer

C. Cognitive symptoms

Answer

D. Affective symptoms

Question 10

Oersted's experiment showed:‌​‍

Accepted Answer

Current-carrying wire produces magnetic field — 1820. Direction by right-hand thumb rule. Unified electricity and magnetism.‌​‍

Answer

Voltage only

Answer

Magnetism produces current

Answer

Heat from current

VFA Mixed Practice Test #557