Plus 2 Lecturer Mixed Practice Test #174

Question 1

Aspirin (acetylsalicylic acid) is known to undergo hydrolysis, especially in the presence of moisture and heat. Which of the following products is formed when aspirin undergoes complete hydrolysis?

Accepted Answer

A. Salicylic acid and acetic acid — Aspirin is an ester of salicylic acid and acetic acid. Upon hydrolysis, the ester bond breaks, regenerating the parent carboxylic acid (salicylic acid) and acetic acid. This reaction is responsible for the characteristic vinegar-like smell of old aspirin and is a key degradation pathway.

Answer

B. Acetylsalicylic acid and ethanol

Answer

C. Phenol and benzoic acid

Answer

D. Salicylamide and methanol

Question 2

A postpartum mother is breastfeeding her newborn and asks for dietary advice to improve lactation. Which nutrient is most critical for enhancing breast milk production?

Accepted Answer

D. Water — While adequate hydration and nutrients like iron and vitamin C are important, galactagogues (e.g., fenugreek, blessed thistle) have been traditionally used to stimulate milk production. Water supports lactation but is not the primary nutrient for milk synthesis.

Answer

A. Vitamin C

Answer

B. Iron

Answer

C. Galactagogues like fenugreek

Question 3

Solution of dy/dx = ky:‌​‍

Accepted Answer

y = C·e^(kx) — Exponential growth/decay. Population, radioactivity, Newton cooling.‌​‍

Answer

y = x^k

Answer

y = kx

Answer

y = ln(kx)

Question 4

A teacher observes that students are more motivated to participate in group projects when they are allowed to choose their own topics rather than being assigned one. This observation aligns with which motivational principle?

Accepted Answer

B. Autonomy (Self-Determination Theory) — Allowing students to choose topics satisfies their need for autonomy, a key component of Self-Determination Theory. Extrinsic rewards involve external incentives, esteem needs relate to self-worth, and classical conditioning involves stimulus-response associations.

Answer

A. Extrinsic rewards

Answer

C. Maslow's Esteem needs

Answer

D. Classical conditioning

Question 5

Which of the following best describes the purpose of an emergency drug tray (crash cart) in a hospital ward?

Accepted Answer

B. To provide a readily available supply of critical medications for life-threatening emergencies. — An emergency drug tray, or crash cart, is specifically designed to contain a standardized set of critical medications and equipment required for rapid response to acute, life-threatening emergencies such as cardiac arrest, anaphylaxis, or severe respiratory distress. Its purpose is to ensure immediate access to essential drugs during a medical crisis. Other options describe general ward stock or specialized storage, not the primary function of a crash cart.

Answer

A. To store commonly used medications for daily patient care.

Answer

C. To keep medications requiring refrigeration or special storage conditions.

Answer

D. To stock medications for patients undergoing routine surgical procedures.

Question 6

Mycoplasma are unique because they:‌​‍

Accepted Answer

Lack cell wall — Smallest free-living organisms. ‌​‍Pleomorphic (variable shape). Resistant to penicillin (which inhibits cell wall synthesis).

Answer

Have large size

Answer

Photosynthesise

Answer

Have nucleus

Question 7

Regular handwashing with soap and water is crucial for preventing the spread of many infectious diseases. Which of the following is the primary reason for its effectiveness?

Accepted Answer

B. It physically removes transient microorganisms and dirt from the skin surface. — Regular handwashing with soap and water is highly effective primarily because it physically removes transient microorganisms, dirt, and organic matter from the skin surface. While some soaps have antiseptic properties, the mechanical action of scrubbing and rinsing is the main mechanism for reducing pathogen load. It does not sterilize the skin, moisturize it as a primary function, or boost the immune system topically.

Answer

A. It moisturizes the skin, preventing cracks where germs can hide.

Answer

C. It sterilizes the skin, killing all bacteria and viruses.

Answer

D. It boosts the immune system through topical absorption.

Question 8

Sahara area:

Accepted Answer

9.2 million sq km — Largest hot desert.

Answer

5 million

Answer

15 million

Answer

3 million

Question 9

Change to reported speech: Ram said, 'I have finished my work.'‌​‍

Accepted Answer

Ram said that he had finished his work — Present perfect → past perfect; 'I' → 'he'; 'my' → 'his'.‌​‍

Answer

Ram says he had finished his work

Answer

Ram said I have finished my work

Answer

Ram said he has finished his work

Question 10

Synonym of UNSCRUPULOUS:‌​‍

Accepted Answer

Unethical — Without moral principles.‌​‍

Answer

Fair

Answer

Honest

Answer

Kind

Plus 2 Lecturer Mixed Practice Test #174