LGS Mixed Practice Test #499

Question 1

What is the primary mechanism by which oxygen moves from the alveoli into the blood capillaries in the lungs?

Accepted Answer

D. Simple diffusion — Oxygen moves from the alveoli into the blood capillaries by simple diffusion. This process occurs because the partial pressure of oxygen is significantly higher in the alveoli than in the deoxygenated blood within the capillaries, creating a concentration gradient that drives oxygen across the alveolar and capillary membranes. Active transport requires energy and moves substances against a gradient, facilitated diffusion uses carrier proteins, and osmosis is specific to water movement.

Answer

A. Active transport

Answer

B. Facilitated diffusion

Answer

C. Osmosis

Question 2

Charles Dickens' novels include:‌​‍

Accepted Answer

Oliver Twist, David Copperfield, Great Expectations, A Tale of Two Cities — Victorian social critic. ‌​‍Industrial revolution, child labour, poverty. 'It was the best of times, it was the worst of times.'

Answer

Odyssey

Answer

Pride and Prejudice

Answer

Tom Sawyer

Question 3

Ottamthullal was introduced by:‌​‍

Accepted Answer

Kunchan Nambiar — Kunchan Nambiar introduced Ottamthullal in the 18th century as a solo dance-story performance.‌​‍

Answer

Thunchaththu Ezhuthachan

Answer

Cherusseri

Answer

Poonthanam

Question 4

Chandrika (newspaper):‌​‍

Accepted Answer

IUML — Muslim League newspaper.‌​‍

Answer

BJP

Answer

Congress

Answer

CPI

Question 5

National Security Advisor 2024-26:

Accepted Answer

Ajit Doval — Ajit Doval since 2014.

Answer

Shivshankar Menon

Answer

MK Narayanan

Answer

Nripendra Misra

Question 6

The capital of Myanmar is:‌​‍

Accepted Answer

Naypyidaw — Naypyidaw has been the capital of Myanmar since 2006. ‌​‍Yangon (Rangoon) was the former capital.

Answer

Yangon

Answer

Mandalay

Answer

Bagan

Question 7

India hosted the ICC Cricket World Cup 2023 final at:‌​‍

Accepted Answer

Ahmedabad (Narendra Modi Stadium) — The 2023 Cricket World Cup final was held at the Narendra Modi Stadium in Ahmedabad.‌​‍

Answer

Mumbai (Wankhede)

Answer

Delhi (Arun Jaitley Stadium)

Answer

Kolkata (Eden Gardens)

Question 8

P. Bhaskaran:

Accepted Answer

Film lyricist, director — Neelakuyil director, lyricist.

Answer

Actor

Answer

Politician

Answer

Novelist only

Question 9

Which of the following physiological changes is most directly responsible for the increased risk of postural hypotension in elderly patients due to autonomic neuropathy?

Accepted Answer

A. Decreased baroreceptor sensitivity leading to impaired heart rate response to blood pressure changes — Postural hypotension in elderly patients with autonomic neuropathy is primarily due to impaired baroreceptor reflexes, which fail to appropriately adjust heart rate and vascular tone in response to changes in posture. While arteriosclerosis (B) contributes to vascular stiffness, it does not directly cause the autonomic dysfunction. Left ventricular hypertrophy (C) and reduced renin-angiotensin-aldosterone activity (D) are less directly linked to the acute drop in blood pressure upon standing.

Answer

B. Increased peripheral vascular resistance due to arteriosclerosis

Answer

C. Reduced cardiac output secondary to left ventricular hypertrophy

Answer

D. Decreased plasma renin and aldosterone levels leading to sodium and water retention

Question 10

Which branch of the autonomic nervous system is primarily responsible for the "rest and digest" responses, such as slowing heart rate and increasing digestion?

Accepted Answer

C. Parasympathetic Nervous System — The Parasympathetic Nervous System conserves energy and promotes "rest and digest" functions, leading to decreased heart rate, increased digestive activity, and pupil constriction. In contrast, the Sympathetic Nervous System governs "fight or flight" responses.

Answer

A. Somatic Nervous System

Answer

B. Sympathetic Nervous System

Answer

D. Central Nervous System

LGS Mixed Practice Test #499