DCOA Mixed Practice Test #405

Question 1

As per the recent SCERT Kerala guidelines for school reopening post-pandemic, which of the following measures is NOT mandated under the 'Safe School Protocol' for primary classes?

Accepted Answer

C. Deployment of a full-time school counselor in every government school — While CO2 monitors are recommended for assessing ventilation, SCERT Kerala does not mandate their installation in every classroom. Option A is correct as masks are required for older children, B is a recommended but not mandatory measure, and D aligns with social distancing protocols.

Answer

A. Mandatory use of face masks for students above 5 years

Answer

B. Installation of CO2 monitors in classrooms to assess air quality

Answer

D. Promoting staggered entry and exit timings to avoid crowding

Question 2

India's 'Social Movements' scholars include:‌​‍

Accepted Answer

All contributed — T. ‌​‍K. Oommen (protest theories), Ghanshyam Shah (critical review), Beteille (caste-class). ‌​‍Rich Indian literature on social movements.

Answer

Andre Beteille

Answer

M. N. Srinivas

Answer

T. K. Oommen, Ghanshyam Shah

Question 3

Most local anesthetics contain a tertiary amine group. This specific functional group is critical for which aspect of their mechanism of action?

Accepted Answer

B. Allowing the drug to exist in an ionized form that can bind to intracellular sodium channels. — The tertiary amine group in local anesthetics allows them to be protonated (ionized) at physiological pH. While the uncharged form crosses the neuronal membrane, the intracellular charged form is essential for binding to the voltage-gated sodium channels from the inside, thereby blocking nerve impulse transmission. The amide linkage, not the tertiary amine, is responsible for resistance to esterase metabolism, and the overall structure is designed for membrane penetration.

Answer

A. Increasing the overall lipophilicity of the drug molecule.

Answer

C. Preventing their metabolism by plasma esterases or hepatic enzymes.

Answer

D. Enhancing the drug's ability to remain in the extracellular space.

Question 4

AIR (All India Radio):‌​‍

Accepted Answer

Public service broadcaster, Prasar Bharati (1997) — Started 1936 (Indian State Broadcasting Service). ‌​‍Akashvani (Tagore's name, 1956). Prasar Bharati autonomous body.

Answer

Foreign

Answer

Private

Answer

Army

Question 5

A teacher in a government school in Kerala notices that a 9-year-old student, despite being in Class 4, struggles significantly with basic reading and arithmetic. The teacher is considering detaining the student. According to the provisions of the Right to Education (RTE) Act, 2009 (as amended), what is the most appropriate action the teacher should take regarding this student's academic progress?

Accepted Answer

C. Provide continuous and comprehensive evaluation, identify specific learning gaps, and offer individualized remedial support within the school to ensure progression. — The RTE Act, even after amendments allowing detention at certain stages (Class 5 & 8), strongly emphasizes continuous assessment and providing intensive remedial support to ensure every child achieves age-appropriate learning outcomes. The primary goal is to support the child's progression within the mainstream system through targeted interventions, not to detain them or transfer them out immediately. Promoting without intervention is against the spirit of quality education.

Answer

A. Detain the student in Class 4 to ensure foundational skills are mastered before promotion to the next grade.

Answer

B. Promote the student to Class 5 without intervention, assuming they will catch up with peer support.

Answer

D. Recommend the student be transferred to an alternative educational institution for children with learning difficulties.

Question 6

First tiger reserve:

Accepted Answer

Corbett (1973) — Corbett — Project Tiger inception.

Answer

Kanha

Answer

Ranthambore

Answer

Bandhavgarh

Question 7

Ideal gas equation PV = nRT uses R ≈:‌​‍

Accepted Answer

Both (same constant different units) — R = 8.314 J/mol·K = 0.0821 L·atm/mol·K = 2 cal/mol·K (approx).‌​‍

Answer

8.314 J/mol·K

Answer

0.082 L·atm/mol·K

Answer

None

Question 8

Chromosome number in humans:

Accepted Answer

46 — 46 (23 pairs). 22 autosome pairs + 1 sex pair.

Answer

23

Answer

44

Answer

48

Question 9

Mirror formula is:‌​‍

Accepted Answer

1/v + 1/u = 1/f — Mirror formula (Cartesian sign convention): 1/v + 1/u = 1/f.‌​‍

Answer

f = v + u

Answer

1/f = 1/v − 1/u

Answer

1/v − 1/u = 1/f

Question 10

India's S-400 from Russia:‌​‍

Accepted Answer

Partial delivery — 3 out of 5 delivered.‌​‍

Answer

Full

Answer

Unknown

Answer

Cancelled

DCOA Mixed Practice Test #405