DCOA Mixed Practice Test #50

Question 1

Which gas is evolved when dilute HCl reacts with zinc?

Accepted Answer

H₂ — Zn + 2HCl → ZnCl₂ + H₂↑.

Answer

O₂

Answer

Cl₂

Answer

CO₂

Question 2

The widespread use of smartphones and social media platforms has brought about significant social changes. From a community health perspective, what is a potential negative consequence of this technological advancement?

Accepted Answer

C. Increased risk of cyber addiction, sedentary lifestyles, and mental health issues. — While technology offers many benefits like improved information access and connectivity, excessive use of smartphones and social media can lead to sedentary behavior, digital eye strain, sleep disturbances, and contribute to mental health issues like anxiety, depression, and cyber addiction, especially among youth. Options A, B, and D represent positive impacts of technology on health and social well-being.

Answer

A. Improved access to health information and teleconsultations.

Answer

B. Enhanced social connectivity among geographically dispersed families.

Answer

D. Facilitation of health awareness campaigns through digital platforms.

Question 3

A teacher notices that students struggle with understanding fractions during mathematics class. Which action research step would involve reviewing existing literature on teaching fractions before designing an intervention?

Accepted Answer

B. Reflection and Planning — Reviewing existing literature is part of the reflection and planning phase, where the teacher gathers background information to inform the intervention. Option A (Data Analysis) occurs after data collection. Option C (Intervention Design) comes after planning. Option D (Problem Identification) is the initial step, not the literature review.

Answer

A. Data Analysis

Answer

C. Intervention Design

Answer

D. Problem Identification

Question 4

Catenation is most pronounced in:

Accepted Answer

C — Carbon's ability to form long chains and rings (self-linking) enables organic chemistry. Strong C-C bonds.

Answer

N

Answer

O

Answer

P

Question 5

Largest producer of fruits:

Accepted Answer

India — India produces most fruits globally (with China close).

Answer

China

Answer

USA

Answer

Brazil

Question 6

How many Fundamental Duties:‌​‍

Accepted Answer

11 — 11 (10 from 42nd Amendment + 1 from 86th).‌​‍

Answer

10

Answer

12

Answer

15

Question 7

In which year was the National Green Tribunal (NGT) established?

Accepted Answer

2010 — The National Green Tribunal was established by the National Green Tribunal Act, 2010.

Answer

2005

Answer

2007

Answer

2013

Question 8

Largest organ of human body:‌​‍

Accepted Answer

Skin — Skin — largest organ by surface area and weight.‌​‍

Answer

Brain

Answer

Heart

Answer

Liver

Question 9

V.D. Satheesan:

Accepted Answer

Leader of Opposition (Kerala 2021+) — LoP in Kerala Assembly.

Answer

CM

Answer

Governor

Answer

Speaker

Question 10

A 7th-grade student consistently arrives late to school, appears sleepy in class, and struggles to concentrate, often asking for food during break time. The teacher observes these patterns and suspects that the student's basic needs are not being met. According to Maslow's Hierarchy of Needs, which level of needs is most likely unfulfilled for this student?

Accepted Answer

C. Physiological needs — Sleepiness, lack of concentration, and hunger are direct indicators of unmet physiological needs, which include fundamental requirements like rest, food, and water. Maslow's Hierarchy posits that these basic needs must be satisfied before an individual can effectively address higher-level needs such as learning and concentration.

Answer

A. Safety needs

Answer

B. Love and belonging needs

Answer

D. Esteem needs

DCOA Mixed Practice Test #50