DCOA Mixed Practice Test #111

Question 1

The NEP 2020 emphasizes 'Experiential Learning' as a core pedagogical approach. Which of the following classroom activities best exemplifies this principle in a high school science classroom?

Accepted Answer

B. Conducting a virtual laboratory experiment on chemical reactions using simulation software — Experiential learning involves hands-on or interactive activities that allow students to learn by doing. Option B (virtual lab experiments) aligns best as it provides an immersive, interactive experience. Options A, C, and D rely on passive or theoretical approaches, which do not embody experiential learning principles.

Answer

A. Memorizing the periodic table through repetitive drills

Answer

C. Assigning textbook-based projects on environmental pollution with a 3-week deadline

Answer

D. Writing a 500-word essay on the life cycle of a butterfly from a reference book

Question 2

Blood pH:‌​‍

Accepted Answer

7.4 — ~7.4 (slightly alkaline).‌​‍

Answer

6.5

Answer

7.0

Answer

8.0

Question 3

Guanine in DNA pairs with:

Accepted Answer

Cytosine — G–C base pair forms 3 hydrogen bonds.

Answer

Adenine

Answer

Thymine

Answer

Uracil

Question 4

The common laboratory acid used for esterification is:

Accepted Answer

Conc. H₂SO₄ (dehydrating agent) — Concentrated H₂SO₄ catalyses and removes water, shifting equilibrium toward ester.

Answer

HCl

Answer

HNO₃

Answer

Acetic acid

Question 5

Humus found in:‌​‍

Accepted Answer

A horizon (topsoil) — Organic-rich top.‌​‍

Answer

C horizon

Answer

R horizon

Answer

B horizon

Question 6

Which authority is responsible for the enforcement of the Narcotic Drugs and Psychotropic Substances (NDPS) Act, 1985, in India?

Accepted Answer

B. Narcotic Control Bureau (NCB) — The Central Bureau of Narcotics (CBN) is the primary authority responsible for the enforcement of the NDPS Act, including the control and regulation of narcotic drugs and psychotropic substances. The Narcotic Control Bureau (NCB) was later established to coordinate and strengthen enforcement efforts.

Answer

A. Central Bureau of Narcotics (CBN)

Answer

C. State Excise Department

Answer

D. Ministry of Social Justice and Empowerment

Question 7

The oldest irrigation project in Kerala is:

Accepted Answer

Pothundi — Pothundi (Palakkad) is Kerala's oldest irrigation project, completed in 1927.

Answer

Malampuzha

Answer

Peechi

Answer

Neyyar

Question 8

UPI (Unified Payments Interface):‌​‍

Accepted Answer

Real-time inter-bank payment system by NPCI — Launched 2016. ‌​‍India's digital payments revolution. 10+ billion transactions/month (2024). ‌​‍Interoperable.

Answer

Only large transactions

Answer

Old system

Answer

Only bank

Question 9

Following the formation of the first elected government in Kerala in 1957, significant policy changes were introduced, particularly impacting the education sector. Who served as the inaugural Education Minister of Kerala, playing a crucial role in shaping the state's educational policies during this transformative period?

Accepted Answer

C. Joseph Mundassery — Joseph Mundassery was the first Education Minister of Kerala in the first elected Communist government led by E. M. S. Namboodiripad. He was instrumental in introducing the controversial Education Bill of 1957, which aimed to regulate private educational institutions and improve the service conditions of teachers, significantly impacting the state's education system.

Answer

A. C. Achutha Menon

Answer

B. E. M. S. Namboodiripad

Answer

D. K. R. Gouri Amma

Question 10

Match authors to works: (a) C.V. ‌​‍Raman Pillai (b) K.M. Panikkar (c) A.R. ‌​‍Raja Raja Varma (d) Kesava Dev with (i) Malaya Vilasam (ii) Premamritam (iii) Parankipatayali (iv) Odayil Ninnu

Accepted Answer

a-ii, b-iii, c-i, d-iv — Premamritam-C.V. ‌​‍Raman Pillai; Parankipatayali-K.M. Panikkar; Malaya Vilasam-A.R. ‌​‍Raja Raja Varma; Odayil Ninnu-Kesava Dev.

Answer

a-iii, b-i, c-ii, d-iv

Answer

a-iii, b-ii, c-i, d-iv

Answer

a-iv, b-iii, c-ii, d-i

DCOA Mixed Practice Test #111