LDC Mixed Practice Test #751

Question 1

How many terminals does a transistor have?‌​‍

Accepted Answer

Three terminals (E, B, C) — Emitter, Base, Collector. NPN and PNP. Used as amplifier and switch.‌​‍

Answer

Two terminals

Answer

Only one

Answer

Four terminals

Question 2

Which of the following physiological changes is most directly responsible for the increase in heart rate during moderate-intensity exercise?

Accepted Answer

B. Increased sympathetic nervous system activity and decreased parasympathetic tone — During moderate-intensity exercise, the sympathetic nervous system is activated, increasing heart rate by releasing norepinephrine, while parasympathetic (vagal) tone decreases. Baroreceptors are inhibited due to increased cardiac output, not stimulated. ANP and ADH are not primary regulators of heart rate in this context.

Answer

A. Decreased arterial blood pressure stimulating baroreceptors

Answer

C. Release of atrial natriuretic peptide (ANP) from the heart

Answer

D. Enhanced production of vasopressin (ADH) by the posterior pituitary

Question 3

The GST Council is chaired by:‌​‍

Accepted Answer

Union Finance Minister — The GST Council is chaired by the Union Finance Minister. ‌​‍It includes Finance Ministers of all states and decides GST rates and rules.

Answer

Prime Minister

Answer

RBI Governor

Answer

Chief Justice of India

Question 4

In Howard Gardner's Theory of Multiple Intelligences, which intelligence type is most closely associated with the ability to understand and manage one's own emotions effectively?

Accepted Answer

B. Intrapersonal Intelligence — Intrapersonal intelligence involves self-awareness and the ability to understand and regulate one's own emotions. Option B is correct, while interpersonal intelligence (A) relates to understanding others' emotions, and the other options (C, D) are unrelated to emotional self-management.

Answer

A. Interpersonal Intelligence

Answer

C. Linguistic Intelligence

Answer

D. Naturalistic Intelligence

Question 5

UNHCR (UN High Commissioner for Refugees) is based in:

Accepted Answer

Geneva — UNHCR founded 1950, based in Geneva. Protects refugees and stateless persons. Won Nobel Peace Prize 1954 and 1981.

Answer

New York

Answer

London

Answer

Paris

Question 6

It has been a controversial topic whether ___ should be made legal or not.‌​‍

Accepted Answer

euthanasia — Euthanasia (mercy killing) is the contested legal/moral topic.‌​‍

Answer

anaesthesia

Answer

militia

Answer

blasphemy

Question 7

SC minimum judges for constitutional bench:‌​‍

Accepted Answer

5 — Minimum 5 judges for constitutional/law questions.‌​‍

Answer

3

Answer

7

Answer

9

Question 8

Wayanad district was carved out of which districts?

Accepted Answer

Kozhikode and Kannur — Wayanad was formed on 1 November 1980 from parts of Kozhikode and Kannur districts.

Answer

Malappuram and Kozhikode

Answer

Palakkad and Kozhikode

Answer

Kannur and Kasaragod

Question 9

Relation that is reflexive, symmetric, transitive:‌​‍

Accepted Answer

Equivalence — Partitions set into equivalence classes. e.g., 'has same birthday' on people.‌​‍

Answer

Function

Answer

One-one

Answer

Identity

Question 10

A and B together can do a piece of work in 12 days; A alone in 18 days. How long will B alone take?

Accepted Answer

36 days — 1/B = 1/12 - 1/18 = (3-2)/36 = 1/36. B alone = 36 days.

Answer

6 days

Answer

30 days

Answer

21 days

LDC Mixed Practice Test #751