DCOA Mixed Practice Test #532

Question 1

The winner of Copa America Football Competition 2015 is:‌​‍

Accepted Answer

Chile — Chile won 2015 Copa America (their first), defeating Argentina on penalties.‌​‍

Answer

Argentina

Answer

Brazil

Answer

France

Question 2

A teacher observes that a new student is quiet, withdrawn, and frequently looks anxious, avoiding eye contact and group activities. Before focusing on academic performance, the teacher prioritizes building a trusting relationship with the student and ensuring they feel safe and accepted in the classroom. According to Maslow's Hierarchy of Needs, which needs is the teacher primarily addressing?

Accepted Answer

B. Love and belonging needs and Safety needs — Feeling safe (Safety needs) and accepted by peers and the teacher (Love and belonging needs) are foundational psychological needs in Maslow's hierarchy. These must be met before a student can fully engage in higher-level learning or self-esteem development.

Answer

A. Esteem needs and Self-actualization needs

Answer

C. Physiological needs and Esteem needs

Answer

D. Self-actualization needs and Physiological needs

Question 3

What are the primary roles of an operating system?‌​‍

Accepted Answer

Process, memory, file, device management; user interface — Examples: Windows, Linux, macOS, Android, iOS. ‌​‍Kernel is core. Linus Torvalds (1991) — Linux.

Answer

Only files

Answer

Only memory

Answer

Only UI

Question 4

Which cell organelle synthesises ATP in aerobic respiration?‌​‍

Accepted Answer

Mitochondria — ATP synthesis via oxidative phosphorylation occurs in mitochondrial inner membrane.‌​‍

Answer

Golgi

Answer

Ribosome

Answer

Chloroplast

Question 5

2, 6, 18, 54, ___‌​‍

Accepted Answer

162 — Each × 3. 54 × 3 = 162.‌​‍

Answer

108

Answer

148

Answer

180

Question 6

Thattekad Bird Sanctuary is called:‌​‍

Accepted Answer

Birdman's paradise — Thattekad (Ernakulam) was called the 'Birdman's Paradise' by ornithologist Salim Ali.‌​‍

Answer

Paradise of Kerala

Answer

Bird kingdom of Kerala

Answer

None

Question 7

Semicon India:‌​‍

Accepted Answer

Gujarat fab 2024 — Tata-PSMC in Dholera, Gujarat.‌​‍

Answer

Karnataka

Answer

TN

Answer

UP

Question 8

Kerala Forest Dept animal census:‌​‍

Accepted Answer

Every 4 years typically — Regular censuses.‌​‍

Answer

Never

Answer

Yearly

Answer

Decade

Question 9

RMS value of AC voltage (sinusoidal) with peak V₀:‌​‍

Accepted Answer

V₀/√2 — Household '230 V AC' is RMS. Peak ≈ 325 V. Power: P = V_rms · I_rms · cos φ.‌​‍

Answer

2V₀

Answer

V₀/2

Answer

V₀

Question 10

Edakkal Caves in:

Accepted Answer

Wayanad — Ancient petroglyphs.

Answer

Idukki

Answer

Thrissur

Answer

Palakkad

DCOA Mixed Practice Test #532