LGS Mixed Practice Test #179

Question 1

Iron is an essential trace element. Its deficiency can lead to anemia. What is the primary biochemical role of iron in the human body that, when impaired, causes the characteristic symptoms of anemia?

Accepted Answer

A. Oxygen transport via hemoglobin — Iron is a critical component of the heme group in hemoglobin, the protein responsible for oxygen transport in red blood cells. In this capacity, iron reversibly binds to oxygen in the lungs and releases it in tissues. A deficiency in iron directly impairs hemoglobin synthesis, leading to reduced oxygen-carrying capacity of the blood, which is the hallmark of anemia.

Answer

B. Regulation of blood pressure

Answer

C. Formation of bone matrix

Answer

D. Synthesis of steroid hormones

Question 2

1 unit electricity =:‌​‍

Accepted Answer

1 kWh — 1 unit = 1 kilowatt-hour.‌​‍

Answer

1 Watt

Answer

1 Joule

Answer

1 Ampere

Question 3

A patient diagnosed with a terminal illness demonstrates remarkable resilience, actively participating in support groups, seeking second opinions, and making plans for their remaining time, rather than succumbing to despair. According to psychodynamic theory, which part of the mind is primarily responsible for this healthy, reality-oriented coping?

Accepted Answer

C. Ego — In psychodynamic theory, the Ego functions on the reality principle, mediating between the primal urges of the Id, the moral demands of the Superego, and the constraints of the external world. It is responsible for rational thought, problem-solving, and healthy coping mechanisms that allow an individual to adapt to reality. The Id operates on the pleasure principle, the Superego embodies moral standards, and the Unconscious holds thoughts and feelings outside of awareness.

Answer

A. Id

Answer

B. Superego

Answer

D. Unconscious

Question 4

Connecting link between reptiles and birds:‌​‍

Accepted Answer

Archaeopteryx (fossil, feathers + teeth) — ~150 mya, Jurassic. Had feathers (bird) and teeth + tail (reptile).‌​‍

Answer

Lungfish

Answer

Ichthyostega

Answer

Pterodactyl

Question 5

Which vitamin is also called Ascorbic Acid?‌​‍

Accepted Answer

Vitamin C — Vitamin C = Ascorbic Acid. Found in citrus fruits, amla. Prevents Scurvy.‌​‍

Answer

Vitamin A

Answer

Vitamin B

Answer

Vitamin E

Question 6

Thermometer measures:‌​‍

Accepted Answer

Temperature — Thermometer measures temperature. Invented by Daniel Fahrenheit.‌​‍

Answer

Pressure

Answer

Humidity

Answer

Speed

Question 7

Kerala density per sq km (2011):

Accepted Answer

860 — 860 per sq km.

Answer

800

Answer

1000

Answer

1200

Question 8

Adolf Hitler committed suicide in:

Accepted Answer

1945 — Hitler died by suicide in his Berlin bunker on 30 April 1945.

Answer

1943

Answer

1944

Answer

1946

Question 9

The Versailles Palace was the residence of:‌​‍

Accepted Answer

The Bourbon kings of France — Built by Louis XIV, Versailles became the seat of Bourbon kings until 1789.‌​‍

Answer

The Holy Roman Emperor

Answer

The Tudor dynasty

Answer

The Spanish Habsburgs

Question 10

Under the National Health Policy 2017, what is the recommended target for the reduction of premature mortality from cardiovascular diseases, cancer, diabetes, or chronic respiratory diseases by 2025?

Accepted Answer

D. 30% reduction — The National Health Policy 2017 sets a target to reduce premature mortality from major NCDs by 25% by 2025, though some documents cite a 30% reduction as an aspirational goal. Option A (10%) and B (15%) are too low, while Option C (25%) is the officially stated target. The question focuses on the policy's measurable outcome for NCDs.

Answer

A. 10% reduction

Answer

B. 15% reduction

Answer

C. 25% reduction

LGS Mixed Practice Test #179