DCOA Mixed Practice Test #513

Question 1

Bay of Bengal cyclone naming:‌​‍

Accepted Answer

IMD + regional — IMD Regional Specialized Meteo Centre.‌​‍

Answer

ISRO

Answer

UN

Answer

WMO

Question 2

During which phase of the 5E learning model would students typically engage in hands-on experiments, collect data, and observe phenomena without direct instruction on the specific concepts being taught?

Accepted Answer

C. Explore — The 'Explore' phase is characterized by students' direct engagement with the learning environment through hands-on activities, investigations, and data collection. This phase allows learners to develop their own understanding through experience before formal explanations are introduced, aligning with constructivist principles.

Answer

A. Engage

Answer

B. Explain

Answer

D. Elaborate

Question 3

One who studies animals is a:

Accepted Answer

Zoologist — Zoology = study of animals; botanist = plants; geologist = rocks/earth.

Answer

Botanist

Answer

Geologist

Answer

Archaeologist

Question 4

A school in a rural area is planning to implement ICT in its classrooms. What is the most crucial factor to consider for the successful and equitable integration of ICT in this context?

Accepted Answer

C. Ensuring reliable internet connectivity and adequate technical support. — For successful and equitable ICT integration, especially in rural areas, reliable internet connectivity is paramount to access online resources, and adequate technical support is essential to maintain hardware/software and troubleshoot issues. Without these foundational elements, even the best ICT tools will be ineffective or inaccessible, making other factors secondary.

Answer

A. The availability of advanced gaming consoles for students.

Answer

B. The aesthetic design of the computer lab furniture.

Answer

D. The number of international educational applications available.

Question 5

Isoelectronic species have:

Accepted Answer

Same number of electrons — e.g., Na⁺, Mg²⁺, O²⁻, F⁻, Ne all have 10 e⁻. Sizes differ with nuclear charge.

Answer

Same mass

Answer

Same neutrons

Answer

Same protons only

Question 6

Capital shifted from Padmanabhapuram to TVM by:‌​‍

Accepted Answer

Marthanda Varma — Marthanda Varma shifted capital to Thiruvananthapuram.‌​‍

Answer

Dharma Raja

Answer

Swathi Thirunal

Answer

Uthradam Thirunal

Question 7

Sabarimala temple is dedicated to:

Accepted Answer

Ayyappan — Lord Ayyappan — located in Pathanamthitta district.

Answer

Shiva

Answer

Vishnu

Answer

Murugan

Question 8

Kerala's west-flowing rivers are crucial for the state's ecology and economy. However, their characteristics make them particularly vulnerable to certain environmental challenges. Which of the following is the most significant environmental challenge faced by these rivers due to their inherent nature?

Accepted Answer

B. High susceptibility to pollution from industrial and urban waste coupled with low dilution capacity during lean seasons. — Kerala's west-flowing rivers are relatively short, have steep gradients, and are predominantly monsoon-fed, leading to significant fluctuations in water volume. During the lean seasons, their reduced flow significantly lowers their dilution capacity, making them highly susceptible to pollution from the dense urban and industrial settlements along their banks. While hydroelectric potential exists due to steep gradients and salinization occurs in lower reaches, pollution due to low dilution is the most pervasive and significant challenge.

Answer

A. Limited potential for hydroelectric power generation due to their short length and steep gradient.

Answer

C. Excessive siltation and delta formation at their mouths, causing navigation difficulties for large vessels.

Answer

D. Rapid salinization of their upper reaches due to tidal ingress from the Arabian Sea throughout the year.

Question 9

DNA is a:‌​‍

Accepted Answer

Polymer of nucleotides (deoxyribose + phosphate + A/T/G/C) — Double helix (Watson-Crick, 1953). ‌​‍A=T, G≡C (base pairing). Antiparallel strands (5' to 3').

Answer

Polysaccharide

Answer

Polymer of amino acids

Answer

Lipid

Question 10

Cannabinoids are from:‌​‍

Accepted Answer

Cannabis sativa (ganja, charas, marijuana) — THC is active compound. ‌​‍Chronic use → amotivation, memory issues. Not physiologically addictive but psychologically.

Answer

Ephedra

Answer

Coca

Answer

Poppy

DCOA Mixed Practice Test #513