DCOA Mixed Practice Test #429

Question 1

Water is made up of which two elements?

Accepted Answer

Hydrogen and Oxygen — Water (H₂O) is made up of Hydrogen and Oxygen — 2 atoms of Hydrogen and 1 atom of Oxygen.

Answer

Hydrogen and Nitrogen

Answer

Oxygen and Carbon

Answer

Nitrogen and Oxygen

Question 2

A teacher observes that a typically calm 16-year-old student frequently experiences intense mood swings, from extreme happiness to sudden irritability, often in response to minor events. Which explanation is most developmentally appropriate for this observation?

Accepted Answer

B. These mood swings are a normal part of hormonal changes and emotional development during adolescence. — Intense mood swings are a common and normal aspect of adolescent emotional development, largely influenced by hormonal changes and the ongoing development of emotional regulation skills. Attributing it to a personality disorder, attention-seeking, or lack of discipline without further evidence is premature and generally inaccurate for typical adolescent development.

Answer

A. The student is likely experiencing early signs of a personality disorder.

Answer

C. The student is deliberately seeking attention through dramatic behavior.

Answer

D. This indicates a lack of parental discipline and guidance.

Question 3

Kerala SilverLine consultations:

Accepted Answer

NDA opposition — Politically contested project.

Answer

Ongoing

Answer

Approved

Answer

Scrapped

Question 4

Tiger reserves total (approx 2024):

Accepted Answer

50+ — About 54 tiger reserves.

Answer

30

Answer

100

Answer

10

Question 5

Who wrote the book 'A Nation in the Making'?

Accepted Answer

S.N. Banerjee — Surendranath Banerjee's 1925 autobiography.

Answer

Sarojini Naidu

Answer

Jawaharlal Nehru

Answer

Abul Kalam Azad

Question 6

World Quantum Day is observed on:‌​‍

Accepted Answer

14 April — 14 April is World Quantum Day. ‌​‍India's first quantum facility (AQRF) was inaugurated on this day in Amaravati.

Answer

12 April

Answer

16 April

Answer

18 April

Question 7

At what age would a typically developing infant be expected to pick up a small object like a raisin using a pincer grasp (thumb and forefinger)?

Accepted Answer

C. 10 months — The pincer grasp, involving the precise opposition of the thumb and forefinger to pick up small objects, typically develops around 9-12 months of age, with 10 months being a common milestone. At 6 months, infants use a palmar grasp, and by 8 months, they might use a crude pincer grasp, but a mature pincer grasp is later.

Answer

A. 6 months

Answer

B. 8 months

Answer

D. 12 months

Question 8

Who wrote the first biography of Sree Narayana Guru?

Accepted Answer

Murkothu Kumaran — Murkothu Kumaran's biography of Sree Narayana Guru was the first.

Answer

Moorkoth Ramunni

Answer

Kumaranasan

Answer

Dr. Palpu

Question 9

Fish production in Kerala mainly comes from:‌​‍

Accepted Answer

Both marine and freshwater — Kerala has significant marine (Arabian Sea coast) and freshwater (backwaters, rivers) fish production.‌​‍

Answer

Freshwater only

Answer

Marine only

Answer

Imported

Question 10

Ossicles (ear bones):‌​‍

Accepted Answer

Malleus, incus, stapes — 3 bones in middle ear.‌​‍

Answer

Only stapes

Answer

Two

Answer

Four

DCOA Mixed Practice Test #429