DCOA Mixed Practice Test #750

Question 1

Munnar is in which district:

Accepted Answer

Idukki — Munnar hill station is in Idukki district.

Answer

Palakkad

Answer

Ernakulam

Answer

Thrissur

Question 2

Who discovered the Edakkal Caves — reference: Wayanad petroglyphs dated to:‌​‍

Accepted Answer

Bronze Age (~6000 BCE) — Edakkal rock engravings are associated with the Neolithic–Bronze Age transition.‌​‍

Answer

Medieval period

Answer

Harappan Phase

Answer

Sangam Age

Question 3

A 15-year-old student is struggling with mood swings, low self-esteem, and difficulty maintaining friendships. Which social development challenge is most likely contributing to these issues?

Accepted Answer

A. Identity vs. role confusion — Erikson's stage of identity vs. role confusion (A) occurs during adolescence (12-18 years) and involves exploring personal identity, values, and social roles, which can lead to mood swings and self-esteem issues. Intimacy vs. isolation (B) is a later stage, while industry vs. inferiority (C) and autonomy vs. shame (D) occur in earlier childhood stages.

Answer

B. Intimacy vs. isolation

Answer

C. Industry vs. inferiority

Answer

D. Autonomy vs. shame and doubt

Question 4

Which of the following is a key recommendation of NEP 2020 for higher education?

Accepted Answer

B. Multidisciplinary education and holistic development — NEP 2020 emphasizes multidisciplinary education and holistic development (B) to foster well-rounded individuals. Reduction in universities (A), elimination of professional courses (C), and centralized control (D) are not its recommendations.

Answer

A. Reduction in the number of universities

Answer

C. Elimination of professional courses

Answer

D. Centralized control of all institutions

Question 5

A mirage is due to:‌​‍

Accepted Answer

Total internal reflection — Mirages are caused by total internal reflection of light in layers of hot air near the ground.‌​‍

Answer

Reflection

Answer

Dispersion

Answer

Diffraction

Question 6

The speed of light in glass (n=1.5) compared to vacuum is:‌​‍

Accepted Answer

1.5 times slower — v = c/n = 3×10⁸/1.5 = 2×10⁸ m/s.‌​‍

Answer

1.5 times faster

Answer

Zero

Answer

Same

Question 7

World Environment Day is observed on:‌​‍

Accepted Answer

5 June — WED on 5 June commemorates the 1972 Stockholm Conference start.‌​‍

Answer

10 December

Answer

16 September

Answer

22 April

Question 8

The master gland of the body is:‌​‍

Accepted Answer

Pituitary — Pituitary gland controls other glands; located at the base of the brain.‌​‍

Answer

Thyroid

Answer

Pancreas

Answer

Adrenal

Question 9

Pressure cooker cooks faster because:‌​‍

Accepted Answer

Higher boiling point due to increased pressure — Higher pressure raises the boiling point of water above 100°C, cooking food faster.‌​‍

Answer

More heat

Answer

Less water

Answer

Better material

Question 10

The fictional detective Sherlock Holmes was created by:

Accepted Answer

Arthur Conan Doyle — Conan Doyle introduced Holmes in 'A Study in Scarlet' (1887).

Answer

Agatha Christie

Answer

Edgar Allan Poe

Answer

P. D. James

DCOA Mixed Practice Test #750