DCOA Mixed Practice Test #763

Question 1

Ramu Kariat:

Accepted Answer

Chemmeen director — Chemmeen (1965) director.

Answer

Poet

Answer

Actor

Answer

Politician

Question 2

Kerala tourist destinations — Munnar famous for:‌​‍

Accepted Answer

Tea gardens, hills — Hill station tea gardens.‌​‍

Answer

Deserts

Answer

Beaches

Answer

Backwaters

Question 3

Which is NOT an electromagnetic wave?‌​‍

Accepted Answer

Sound waves — Sound is mechanical; radio, microwave, IR, visible, UV, X-ray, gamma are EM.‌​‍

Answer

X-rays

Answer

Radio waves

Answer

Gamma rays

Question 4

GNU Public License (GPL) is an example of:

Accepted Answer

Copyleft open-source licence — GPL requires derivative works to remain under the same licence — 'copyleft'.

Answer

Commercial licence

Answer

Proprietary licence

Answer

Public domain

Question 5

Propan-2-ol has the structure:‌​‍

Accepted Answer

CH₃CHOHCH₃ — Propan-2-ol (isopropanol): OH on middle carbon — secondary alcohol.‌​‍

Answer

CH₃OCH₂CH₃

Answer

CH₃CH₂CH₂OH

Answer

CH₃CH₂CHO

Question 6

India's current President:‌​‍

Accepted Answer

Droupadi Murmu — Droupadi Murmu (since July 2022) — first tribal President.‌​‍

Answer

Ram Nath Kovind

Answer

Pratibha Patil

Answer

Pranab Mukherjee

Question 7

Arrhenius equation:‌​‍

Accepted Answer

k = A·e^(-Ea/RT) — Ea = activation energy. ‌​‍ln k = ln A - Ea/RT. Rate doubles for every ~10°C rise (typical Ea).

Answer

k = A+Ea

Answer

k = A·Ea

Answer

k = RT

Question 8

A diabetic patient's urine test shows positive for ketones. Which biochemical process is primarily responsible for ketone production?

Accepted Answer

B. Lipolysis — Ketone bodies are produced during lipolysis (B) when fatty acids are metabolized in the absence of adequate glucose (starvation or diabetes). Glycolysis (A) and glycogenolysis (C) do not produce ketones; gluconeogenesis (D) consumes them.

Answer

A. Glycolysis

Answer

C. Glycogenolysis

Answer

D. Gluconeogenesis

Question 9

Hardy-Weinberg equation p² + 2pq + q² = 1 describes:‌​‍

Accepted Answer

Allele and genotype frequencies in equilibrium population — If population in HWE, frequencies unchanged across generations. ‌​‍Deviations → evolutionary forces at work.

Answer

Extinction

Answer

Evolution

Answer

Mutation

Question 10

India's Paralympics 2024:‌​‍

Accepted Answer

29 medals (record) — 29 medals — record.‌​‍

Answer

20

Answer

50

Answer

10

DCOA Mixed Practice Test #763