LGS Mixed Practice Test #67

Question 1

Which of the following is the primary site for the synthesis of ketone bodies in the body?

Accepted Answer

C. Liver — The liver is the primary site for ketogenesis, where fatty acids are converted into ketone bodies (acetoacetate, beta-hydroxybutyrate, and acetone) during prolonged fasting or carbohydrate restriction. Other tissues can utilize but not produce ketones.

Answer

A. Kidneys

Answer

B. Brain

Answer

D. Skeletal muscles

Question 2

The bicarbonate buffer system (H2CO3/HCO3-) is the most important extracellular buffer in the human body. Its primary role is to maintain the physiological pH of blood within a narrow range. Which of the following statements accurately describes its function?

Accepted Answer

B. It quickly neutralizes excess H+ ions by forming carbonic acid, which can then be converted to CO2 and excreted by the lungs. — The bicarbonate buffer system acts rapidly to buffer pH changes in the extracellular fluid. When excess H+ ions are present, bicarbonate (HCO3-) combines with them to form carbonic acid (H2CO3). Carbonic acid then dissociates into CO2 and water, allowing CO2 to be expelled by the lungs, effectively removing acid from the body.

Answer

A. It primarily buffers intracellular pH changes.

Answer

C. It actively transports H+ ions out of the body via the kidneys.

Answer

D. It directly consumes CO2 to produce bicarbonate ions.

Question 3

India declared polio-free in:‌​‍

Accepted Answer

2014 — WHO certified India as polio-free on 27 March 2014.‌​‍

Answer

2010

Answer

2012

Answer

2016

Question 4

Geological time scale major eons:

Accepted Answer

Hadean, Archean, Proterozoic, Phanerozoic — Phanerozoic (540 mya-present) divided into Palaeozoic, Mesozoic (dinosaurs), Cenozoic (mammals, humans).

Answer

Only one

Answer

Palaeozoic only

Answer

Cenozoic

Question 5

Kerala's unique physiography significantly influences its river systems. Which of the following geographical features is the primary reason for the short length, high velocity, and predominantly west-flowing nature of most rivers in the state?

Accepted Answer

B. The steep gradient of the Western Ghats on its western face, close to the Arabian Sea. — The Western Ghats rise abruptly and very close to the Arabian Sea on Kerala's western side. This steep and short slope causes rivers originating in the Ghats to flow rapidly over a short distance directly into the sea, thus making them short, swift, and predominantly west-flowing. While rainfall contributes to water volume and forests/soil influence runoff, the fundamental short and swift nature is due to the steep physiographic drop.

Answer

A. The extensive network of backwaters and estuaries along the coastal plains.

Answer

C. The high annual rainfall concentrated during the southwest monsoon season.

Answer

D. The prevalence of laterite soil and dense tropical evergreen forests in the midlands.

Question 6

Kerala Assembly 2021 winner:

Accepted Answer

LDF — LDF retained power.

Answer

UDF

Answer

BJP

Answer

None

Question 7

Who is regarded as the 'Joan of Arc of Kerala'?

Accepted Answer

Akkamma Cheriyan — Akkamma Cherian — Joan of Arc of Travancore for her role in 1938 freedom struggle.

Answer

Anna Chandi

Answer

Parvathi Nenmenimangalam

Answer

A.V. Kuttimalu Amma

Question 8

Photosynthesis requires which pigment to absorb light?‌​‍

Accepted Answer

Chlorophyll — Chlorophyll a (primary), chlorophyll b, carotenoids; absorb red and blue light mainly.‌​‍

Answer

Xanthophyll

Answer

Melanin

Answer

Haemoglobin

Question 9

One word: Exaggeration for effect:‌​‍

Accepted Answer

Hyperbole — Hyperbole.‌​‍

Answer

Simile

Answer

Irony

Answer

Alliteration

Question 10

A tall, slender, fair-haired individual with a cheerful disposition, but prone to anxiety, especially about future events or thunderstorms, presents with burning pains (better by cold applications) and a strong desire for cold drinks. They also have a tendency for easy bleeding. Which remedy is indicated?

Accepted Answer

D. Phosphorus — Phosphorus is characterized by a tall, slender build, an amiable yet anxious disposition (especially anticipatory anxiety and fear of thunderstorms), burning pains ameliorated by cold, strong desire for cold drinks, and a hemorrhagic diathesis. Argentum Nitricum has anticipatory anxiety but often with diarrhea, Gelsemium has dullness and drowsiness, and Lycopodium has right-sided complaints and 4-8 PM aggravation, making Phosphorus the most fitting choice.

Answer

A. Argentum Nitricum

Answer

B. Gelsemium Sempervirens

Answer

C. Lycopodium Clavatum

LGS Mixed Practice Test #67