DCOA Mixed Practice Test #281

Question 1

The general formula of alkenes is:

Accepted Answer

CₙH₂ₙ — Alkenes have one C=C double bond; general formula CₙH₂ₙ.

Answer

CₙH₂ₙ₊₂

Answer

CₙH₂ₙ₋₂

Answer

CₙHₙ

Question 2

Dengue is spread by:‌​‍

Accepted Answer

Aedes mosquito — Aedes aegypti (day-biting) transmits dengue virus; also spreads chikungunya and Zika.‌​‍

Answer

Culex mosquito

Answer

Housefly

Answer

Anopheles mosquito

Question 3

The one and only fresh water lake in Kerala is:‌​‍

Accepted Answer

Sasthamkotta — Sasthamkotta Lake (Kollam) — Kerala's largest freshwater lake.‌​‍

Answer

Ashtamudi

Answer

Puralimala

Answer

Vembanad

Question 4

Pazhassi Raja's guerrilla war:

Accepted Answer

1793-1805 — Fought British in Malabar.

Answer

1857

Answer

1700

Answer

1947

Question 5

A patient's Liver Function Test (LFT) shows significantly elevated Alanine Aminotransferase (ALT) and Aspartate Aminotransferase (AST) levels. What is the most likely interpretation of these findings?

Accepted Answer

C. Hepatocellular damage — ALT and AST are intracellular enzymes primarily found in hepatocytes. Elevated levels in the serum indicate that liver cells have been damaged, causing these enzymes to leak into the bloodstream. Obstructive jaundice or biliary tract infection would typically show a more pronounced elevation in Alkaline Phosphatase (ALP) and bilirubin.

Answer

A. Obstructive jaundice

Answer

B. Biliary tract infection

Answer

D. Renal impairment

Question 6

Which letter is 8th to left of 17th from left?

Accepted Answer

9th letter (I) — 17-8 = 9th letter = I.

Answer

9th

Answer

8th

Answer

J

Question 7

India assumed G20 presidency on:‌​‍

Accepted Answer

1 December 2022 — India assumed the G20 presidency on 1 December 2022, holding it until 30 November 2023.‌​‍

Answer

1 January 2023

Answer

15 August 2022

Answer

1 November 2022

Question 8

The Punnapra-Vayalar Uprising (1946) holds a distinct place in Kerala's freedom struggle narrative. Unlike many other contemporary movements primarily targeting British colonial rule, this uprising had a specific internal focus. What was its central demand or trigger?

Accepted Answer

C. Opposition to Dewan C.P. Ramaswami Iyer's 'American Model' constitutional reforms, which was seen as an attempt to perpetuate autocratic rule and prevent Travancore's democratization and integration with independent India. — The Punnapra-Vayalar Uprising was primarily a revolt against the autocratic rule of Dewan C.P. Ramaswami Iyer in Travancore and his proposed 'American Model' constitution. This model was perceived as a move to retain power for the Dewan, prevent democratic reforms, and potentially keep Travancore independent from the impending Indian Union. While economic distress was a contributing factor, the core trigger was political opposition to the Dewan's constitutional proposals. Options A, B, and D either state incorrect primary objectives or misattribute the target of the rebellion.

Answer

A. The demand for the formation of a separate linguistic state of Kerala, uniting all Malayalam-speaking regions.

Answer

B. A direct armed rebellion against the British resident's authority in Travancore, aiming to establish a provisional independent government.

Answer

D. A protest against the imposition of wartime taxes and food rationing by the Travancore state, without any broader political objectives.

Question 9

The autobiography 'Long Walk to Freedom' is by:‌​‍

Accepted Answer

Nelson Mandela — Nelson Mandela wrote Long Walk to Freedom about his life and struggle against apartheid.‌​‍

Answer

Martin Luther King Jr.

Answer

Barack Obama

Answer

Mahatma Gandhi

Question 10

Faraday's first law of electrolysis:

Accepted Answer

Mass ∝ charge passed (m = Zit) — Z = electrochemical equivalent. 1 Faraday = 96500 C deposits 1 equivalent of substance.

Answer

Mass ∝ time only

Answer

Mass ∝ voltage

Answer

Mass ∝ 1/Q

DCOA Mixed Practice Test #281