DCOA Mixed Practice Test #166

Question 1

Founder of the 'Saiva Prakasha Sabha':‌​‍

Accepted Answer

Thycaud Ayya — Thycaud Ayya Swamikal founded Saiva Prakasha Sabha in 1892.‌​‍

Answer

Chattampi Swamikal

Answer

Poykayil Yohannan

Answer

Ayya Vaikundar

Question 2

Which initiative launched by the Kerala State Higher Education Council aims to rejuvenate higher education institutions by enhancing faculty skills, research outcomes, and infrastructure through a performance-based funding model?

Accepted Answer

C. KHEP (Kerala Higher Education Project) — The KHEP is a World Bank-funded initiative by the Kerala State Higher Education Council to improve higher education quality through performance-based grants. K-DISC focuses on employment and skill development, K-SYNERGY is not a recognized programme, and K-SWAYAM is an online learning platform unrelated to funding models.

Answer

A. K-DISC (Kerala Development and Innovation Strategic Council)

Answer

B. K-SYNERGY (Kerala Synergy for Higher Education Rejuvenation and Growth Yield)

Answer

D. K-SWAYAM (Kerala State Wide Access for Yielding Advanced Modules)

Question 3

Which statement accurately describes the negative inductive effect (–I)?‌​‍

Accepted Answer

Withdraws electrons through sigma bonds — Electronegative groups (–NO₂, –CN, –Cl) pull e⁻ density. ‌​‍+I: alkyl groups donate.

Answer

Only π

Answer

Hyperconjugation

Answer

Donates electrons

Question 4

A research study is being conducted to evaluate the effectiveness of a new pain management protocol. Which of the following methods would best ensure the validity of the study results?

Accepted Answer

B. Randomizing participants to control and intervention groups. — Randomizing participants minimizes selection bias and ensures that both groups are comparable, increasing the validity of the results. While a large sample size (A) is beneficial, it does not address bias. Conducting the study in a single hospital (C) limits generalizability, and self-reported scores without validation (D) can introduce measurement bias.

Answer

A. Using a large sample size to increase statistical power.

Answer

C. Conducting the study in a single hospital to minimize variability.

Answer

D. Relying on self-reported pain scores without validation tools.

Question 5

In the body's primary extracellular fluid buffer system, which pair of components works together to swiftly neutralize excess acids or bases, thereby maintaining blood pH within a narrow range?

Accepted Answer

B. Carbonic acid and bicarbonate ions — The bicarbonate buffer system, consisting of carbonic acid (H2CO3) and bicarbonate ions (HCO3-), is the most important extracellular buffer for maintaining blood pH. It can rapidly neutralize both acids and bases. Hemoglobin and plasma proteins are also buffers, and phosphate/ammonia are important renal buffers, but the bicarbonate system is the primary extracellular one. Sodium and chloride are electrolytes, not buffers.

Answer

A. Hemoglobin and plasma proteins

Answer

C. Phosphate and ammonia

Answer

D. Sodium and chloride

Question 6

Which writer is associated with the 'Malayali Memorial'?

Accepted Answer

C.V. Raman Pillai — C.V. Raman Pillai drafted the Malayali Memorial (1891) petition.

Answer

E.V. Krishna Pillai

Answer

Kumaran Asan

Answer

Bodheswaran

Question 7

Pareto efficient allocation is:‌​‍

Accepted Answer

No one can be made better off without making someone worse off — Vilfredo Pareto: efficiency criterion. ‌​‍Distinct from equity — Pareto efficient allocations can be highly unequal.

Answer

Random

Answer

Equal outcomes

Answer

Maximum inequality

Question 8

Retina function:‌​‍

Accepted Answer

Image formation/light detection — Photoreceptor layer.‌​‍

Answer

Blocking

Answer

Focusing

Answer

Moving

Question 9

Sound waves are:‌​‍

Accepted Answer

Longitudinal waves — Sound waves are longitudinal waves — the particles vibrate parallel to the direction of wave propagation (compressions and rarefactions).‌​‍

Answer

Transverse waves

Answer

Surface waves

Answer

Electromagnetic waves

Question 10

Peptide bond forms between:‌​‍

Accepted Answer

Amino acids (COOH + NH₂ → peptide + H₂O) — Condensation reaction. Protein = polypeptide. 20 standard amino acids.‌​‍

Answer

Fatty acids

Answer

Sugar-phosphate

Answer

Nucleotides

DCOA Mixed Practice Test #166