DCOA Mixed Practice Test #202

Question 1

Golgi apparatus function:‌​‍

Accepted Answer

Protein modification, sorting, packaging — Cis (near ER) and trans faces. ‌​‍Glycosylation, phosphorylation. Forms vesicles including lysosomes.

Answer

Photosynthesis

Answer

Energy production

Answer

DNA replication

Question 2

The Oslo Peace Accords (1993) were between:‌​‍

Accepted Answer

Israel and PLO — Rabin (Israel) + Arafat (PLO) shook hands at White House. ‌​‍Framework for Palestinian self-governance. Rabin assassinated 1995; process eventually stalled.

Answer

North-South Korea

Answer

India-Pakistan

Answer

US-China

Question 3

Roasting is done for:‌​‍

Accepted Answer

Sulfide ores (in excess air to convert to oxide) — ZnS → ZnO. ‌​‍Calcination for carbonate/hydroxide ores in absence of air. Smelting involves reduction (often by coke).

Answer

Nitrate

Answer

Oxide ores

Answer

Carbonate

Question 4

Rolling without slipping requires:

Accepted Answer

v = ωR — Condition for pure rolling. Contact point instantaneously at rest.

Answer

v = 0

Answer

v = ω/R

Answer

ω = 0

Question 5

Which functional group is characteristic of the phenothiazine antipsychotics, such as Chlorpromazine?

Accepted Answer

A. A tricyclic ring system containing sulfur and nitrogen, with a side chain attached to nitrogen. — Phenothiazine antipsychotics are characterized by a tricyclic ring system with a sulfur atom and a nitrogen atom in the central ring, and a basic aminoalkyl side chain attached to the nitrogen. This specific structure is crucial for their antipsychotic activity. Benzodiazepines are anxiolytics, beta-lactams are antibiotics, and purine derivatives are stimulants/diuretics, all having distinct chemical structures.

Answer

B. A benzodiazepine ring system with a halogen substituent.

Answer

C. A four-membered beta-lactam ring fused to a thiazolidine ring.

Answer

D. A purine derivative with a methylxanthine structure.

Question 6

Bladder capacity:‌​‍

Accepted Answer

500 ml — About 400-600 ml.‌​‍

Answer

5 L

Answer

100 ml

Answer

1 L

Question 7

Cro-Magnon was:‌​‍

Accepted Answer

Early H. sapiens with cave art — ~40,000 ya in Europe. ‌​‍Anatomically modern. Lascaux, Altamira cave paintings. ‌​‍Coexisted with Neanderthals briefly.

Answer

Different species

Answer

Reptile

Answer

Ape

Question 8

Vijayanagara's zenith under:

Accepted Answer

Krishnadevaraya — Krishnadevaraya (1509-1529).

Answer

Harihara

Answer

Bukka

Answer

Sadashiva

Question 9

Newton's Second Law of Motion states that force equals:‌​‍

Accepted Answer

mass × acceleration — F = ma; net force = rate of change of momentum.‌​‍

Answer

mass × velocity

Answer

weight × time

Answer

mass × displacement

Question 10

A key recommendation of NEP 2020 is the establishment of PARAKH. What is the primary role envisioned for PARAKH in the Indian education system?

Accepted Answer

C. To set norms, standards, and guidelines for student assessment and evaluation. — PARAKH (Performance Assessment, Review, and Analysis of Knowledge for Holistic Development) is envisioned as a National Assessment Centre to set norms, standards, and guidelines for student assessment and evaluation. Its role is not to develop textbooks (NCERT/SCERT), conduct higher education entrance exams (NTA), or manage school admissions.

Answer

A. To develop new textbooks and instructional materials for all subjects.

Answer

B. To conduct entrance examinations for higher education institutions.

Answer

D. To manage the admission process for all government schools.

DCOA Mixed Practice Test #202