DCOA Mixed Practice Test #435

Question 1

Total Literacy Campaign (TLC) of Ernakulam in 1990 made it India's first:

Accepted Answer

Fully literate district — Ernakulam became India's first fully literate district in 1990 through the Total Literacy Campaign.

Answer

Digital district

Answer

Paperless district

Answer

Cashless district

Question 2

The functional unit of the kidney responsible for filtering blood and forming urine is the:

Accepted Answer

B. Nephron — The nephron is the microscopic functional unit of the kidney, consisting of a renal corpuscle (which includes the glomerulus) and a renal tubule, responsible for filtering blood, reabsorbing useful substances, and excreting waste to form urine. The ureter transports urine, the glomerulus is part of the nephron, and the renal pelvis collects urine before it enters the ureter.

Answer

A. Ureter

Answer

C. Glomerulus

Answer

D. Renal pelvis

Question 3

Who is also known as Muthukutty Swami?‌​‍

Accepted Answer

Vaikunda Swami — Ayya Vaikundar's birth name was Muthukutty.‌​‍

Answer

Chattampi Swami

Answer

Narayana Guru Swami

Answer

Vagbhatananda Swami

Question 4

Element with highest electronegativity is:‌​‍

Accepted Answer

F — F = 4.0 (Pauling). ‌​‍Trend: F > O > Cl > N. Increases across period, decreases down group.

Answer

H

Answer

O

Answer

Cl

Question 5

Classical conditioning was studied by:‌​‍

Accepted Answer

Ivan Pavlov (dog-bell-salivation) — UCS (food) + CS (bell) → CR (salivation to bell alone). ‌​‍Nobel 1904 (digestive physiology actually).

Answer

Skinner

Answer

Bandura

Answer

Watson

Question 6

The Aztec Empire (Mexico) was conquered by:‌​‍

Accepted Answer

Hernán Cortés (1521) — Cortés defeated Aztecs under Moctezuma II → conquered Tenochtitlan 1521. ‌​‍Smallpox devastated native populations.

Answer

Columbus

Answer

Francisco Pizarro

Answer

Magellan

Question 7

Choke coil reduces current in AC circuit without:‌​‍

Accepted Answer

Power consumption (unlike resistor) — Pure inductor consumes no real power (cos φ = 0). Used in tube lights.‌​‍

Answer

Power loss (inductive, no heat)

Answer

Doing anything

Answer

Phase change

Question 8

Which Veda contains magic spells?‌​‍

Accepted Answer

Radio waves — Radio waves (km to mm) have longest wavelengths in the EM spectrum.‌​‍

Answer

Gamma

Answer

X-ray

Answer

Visible

Question 9

When a police siren approaches, its perceived pitch:‌​‍

Accepted Answer

Increases — Approaching source → shorter perceived wavelength → higher pitch (Doppler).‌​‍

Answer

Disappears

Answer

Stays constant

Answer

Decreases

Question 10

Pineal gland:‌​‍

Accepted Answer

Brain — Brain — produces melatonin.‌​‍

Answer

Heart

Answer

Liver

Answer

Kidney

DCOA Mixed Practice Test #435