DCOA Mixed Practice Test #839

Question 1

Who discovered the Edakkal Caves and its rock art in Wayanad?

Accepted Answer

Fawcett — F. Fawcett, a British police superintendent, documented Edakkal in 1890.

Answer

Robert Bruce Foote

Answer

Babington

Answer

William Logan

Question 2

Kerala state fruit:‌​‍

Accepted Answer

Jackfruit — Jackfruit (Chakka).‌​‍

Answer

Pineapple

Answer

Mango

Answer

Banana

Question 3

Terminal velocity of a sphere falling through viscous fluid is proportional to:‌​‍

Accepted Answer

r² — v_t = (2/9) × r² (ρ_s - ρ_f) g/η. Bigger drops fall faster.‌​‍

Answer

r

Answer

1/r

Answer

r³

Question 4

Nephron parts:‌​‍

Accepted Answer

Glomerulus + tubule — Bowman's capsule + glomerulus + tubule system.‌​‍

Answer

Hepatocyte + duct

Answer

Neuron + axon

Answer

Alveolus + bronchi

Question 5

Ernakulam achieved 100% literacy:

Accepted Answer

1990 — Ernakulam first Indian district 100% literate, 1990.

Answer

1991

Answer

1989

Answer

1995

Question 6

What is the address format for IP version 4?‌​‍

Accepted Answer

32-bit, 4 octets — ~4.3 billion addresses. ‌​‍IPv6: 128-bit (2^128 addresses). IPv4 exhaustion led to IPv6 adoption. ‌​‍Dual-stack transition.

Answer

8-bit

Answer

64-bit

Answer

128-bit

Question 7

Which Indian state consistently has the highest Human Development Index (HDI)?‌​‍

Accepted Answer

Kerala — Kerala consistently ranks highest among Indian states in HDI, owing to its high literacy rate, better health indicators, and social development.‌​‍

Answer

Tamil Nadu

Answer

Goa

Answer

Karnataka

Question 8

A manufacturing unit aims to produce a standardized herbal extract of Ashwagandha (Withania somnifera). What is the most appropriate approach for standardization to ensure consistent therapeutic efficacy?

Accepted Answer

C. Quantifying specific active marker compounds like Withanolides. — For ensuring consistent therapeutic efficacy of a herbal extract, standardization based on the quantification of specific active marker compounds (e.g., Withanolides in Ashwagandha) is crucial. While uniform color, ash content, and microbial absence are important for overall quality control, they do not directly guarantee the presence and concentration of the compounds responsible for the drug's therapeutic action.

Answer

A. Ensuring uniform color and odor of the extract batch.

Answer

B. Standardizing the extract based on the percentage of total ash content.

Answer

D. Verifying the absence of microbial contamination in the final product.

Question 9

Net ATP yield in aerobic respiration of 1 glucose (eukaryote):‌​‍

Accepted Answer

~30-32 — Glycolysis: 2 ATP; Krebs: 2 ATP; Oxidative phosphorylation: ~26-28. ‌​‍Old textbook figure 38.

Answer

4

Answer

2

Answer

100

Question 10

The Kerala Land Reform Act was passed in:‌​‍

Accepted Answer

1969 — The Kerala Land Reforms (Amendment) Act 1969 abolished landlordism and redistributed land.‌​‍

Answer

1957

Answer

1963

Answer

1975

DCOA Mixed Practice Test #839