DCOA Mixed Practice Test #327

Question 1

Adsorption on activated charcoal is:

Accepted Answer

Physisorption (van der Waals), reversible, low heat — ΔH ~20-40 kJ/mol. Multilayer. Chemisorption: chemical bond, high ΔH (>80), monolayer, specific.

Answer

Chemisorption

Answer

Neither

Answer

Electrolysis

Question 2

A patient is diagnosed with severe metabolic acidosis. Which of the following physiological compensatory mechanisms would be the MOST immediate and significant in attempting to restore the blood pH towards its normal range?

Accepted Answer

B. Hyperventilation to reduce arterial PCO2. — Hyperventilation is the most immediate and significant compensatory mechanism for metabolic acidosis. By increasing the rate and depth of breathing, the body rapidly expels more carbon dioxide, thereby reducing arterial PCO2 and shifting the bicarbonate buffer system equilibrium to decrease hydrogen ion concentration and raise pH. Increased renal reabsorption of bicarbonate ions and enhanced secretion of aldosterone are renal compensatory mechanisms, which are slower to act compared to respiratory compensation. Activation of the thirst mechanism is related to fluid balance and osmoregulation,

Answer

A. Increased renal reabsorption of bicarbonate ions.

Answer

C. Enhanced secretion of aldosterone to increase H+ excretion.

Answer

D. Activation of the thirst mechanism to increase fluid intake.

Question 3

India's first lithium deposit announced:‌​‍

Accepted Answer

Feb 2023 J&K — Feb 2023.‌​‍

Answer

2022

Answer

2025

Answer

2020

Question 4

Kerala literacy rate:‌​‍

Accepted Answer

93.91% — 93.91% (Census 2011) — highest in India.‌​‍

Answer

85%

Answer

90%

Answer

97%

Question 5

Tipu Sultan invaded Malabar in:‌​‍

Accepted Answer

1766 — Tipu Sultan's forces invaded Malabar from 1766 onwards. ‌​‍British took over after Treaty of Seringapatam (1792).

Answer

1780

Answer

1792

Answer

1800

Question 6

Guruvayur Devaswom:

Accepted Answer

Autonomous — Autonomous body.

Answer

Travancore

Answer

Cochin

Answer

Malabar

Question 7

The Nobel Prize in Literature was awarded to Rabindranath Tagore in:

Accepted Answer

1913 — Tagore won the Nobel for 'Gitanjali' in 1913 — first Asian Nobel laureate.

Answer

1901

Answer

1907

Answer

1920

Question 8

In a healthcare setting, sharp waste (e.g., needles, scalpels) should be disposed of in:

Accepted Answer

C. Puncture-resistant, leak-proof containers — Sharp waste poses a significant risk of injury and infection, so it must be disposed of in specialized puncture-resistant, leak-proof containers, often referred to as sharps containers. Regular bins, infectious waste bags (which are not puncture-proof), or recyclable bins are inappropriate and dangerous for sharp objects.

Answer

A. Regular black waste bins

Answer

B. Yellow infectious waste bags

Answer

D. Blue recyclable bins

Question 9

In a primary school, a child with autism spectrum disorder (ASD) faces challenges in peer interaction and sensory overload. Which inclusive practice aligns with both RTE 2009 and RPwD Act 2016?

Accepted Answer

B. Designing a sensory-friendly classroom environment with flexible seating and reduced noise — Both RTE 2009 (Section 24) and RPwD Act 2016 emphasize creating supportive classroom environments. Segregation (A) and exclusion (C, D) violate inclusion principles. Sensory-friendly adaptations (B) are evidence-based and legally mandated for children with ASD.

Answer

A. Segregating the child during recess to avoid peer conflicts

Answer

C. Requiring the child to participate in all group activities without accommodations

Answer

D. Providing one-on-one academic tuition only, excluding social skill development

Question 10

Who founded Muhammadeeya Sabha in Kannur?‌​‍

Accepted Answer

Sayyed Sanahulla Makti Thangal — Sayyid Sanaullah Makti Thangal founded Muhammadeeya Sabha for Muslim reform.‌​‍

Answer

Vakkom Maulavi

Answer

Sheikh Muhammed Hamadani Thangal

Answer

Ummar Khasi

DCOA Mixed Practice Test #327