Plus 2 Lecturer Mixed Practice Test #726

Question 1

The Contact process manufactures:‌​‍

Accepted Answer

H₂SO₄ — Contact: S → SO₂ → SO₃ (V₂O₅ catalyst) → oleum → H₂SO₄.‌​‍

Answer

NH₃

Answer

HCl

Answer

HNO₃

Question 2

Acetylcholine is a key neurotransmitter in the nervous system. In which part of the autonomic nervous system is acetylcholine the primary neurotransmitter released by postganglionic neurons at their target organs?

Accepted Answer

B. Parasympathetic nervous system — In the parasympathetic nervous system, acetylcholine is the neurotransmitter released by both preganglionic and postganglionic neurons at their target organs, mediating 'rest and digest' responses. In contrast, the sympathetic nervous system primarily uses norepinephrine at its postganglionic synapses (except for sweat glands). The somatic nervous system is voluntary and uses acetylcholine at neuromuscular junctions, while the central nervous system uses a wide array of neurotransmitters.

Answer

A. Sympathetic nervous system

Answer

C. Somatic nervous system

Answer

D. Central nervous system

Question 3

Longest bone in human body:‌​‍

Accepted Answer

Femur (thigh) — Smallest: stapes (ear). Strongest: femur. Total bones in adult: 206.‌​‍

Answer

Fibula

Answer

Tibia

Answer

Humerus

Question 4

Galvanisation coats iron with:‌​‍

Accepted Answer

Zinc — Zinc — prevents rusting.‌​‍

Answer

Copper

Answer

Tin

Answer

Chromium

Question 5

RAW (Research & Analysis Wing) founded:‌​‍

Accepted Answer

1968 — 1968 as India's external intel agency.‌​‍

Answer

1971

Answer

1947

Answer

1980

Question 6

Antonym of SHORT:

Accepted Answer

Long — Short ↔ long.

Answer

Brief

Answer

Tall

Answer

Lengthy

Question 7

Krebs cycle (citric acid cycle) occurs in:

Accepted Answer

Mitochondrial matrix — Krebs cycle happens in matrix of mitochondria; produces NADH, FADH₂, CO₂.

Answer

Cytoplasm

Answer

Nucleus

Answer

Lysosome

Question 8

Longest bone in body:

Accepted Answer

Femur — Femur (thigh bone).

Answer

Tibia

Answer

Humerus

Answer

Fibula

Question 9

Power dissipated in a resistor is:‌​‍

Accepted Answer

All of the above are equivalent — Using Ohm's law V=IR, all three expressions give the same power.‌​‍

Answer

I²R

Answer

V²/R

Answer

V × I

Question 10

AI stands for:‌​‍

Accepted Answer

Artificial Intelligence — Artificial Intelligence — machines that can learn and make decisions.‌​‍

Answer

Auto Intelligence

Answer

Automated Input

Answer

Applied Informatics

Plus 2 Lecturer Mixed Practice Test #726