DCOA Mixed Practice Test #29

Question 1

The chemical name of washing soda is:‌​‍

Accepted Answer

Sodium carbonate decahydrate — Washing soda: Na₂CO₃·10H₂O.‌​‍

Answer

Sodium hydroxide

Answer

Sodium sulphate

Answer

Sodium bicarbonate

Question 2

The activity series of metals arranges metals by:

Accepted Answer

Ease of losing electrons (reactivity) — Activity series: K > Na > Ca > Mg > Al > Zn > Fe > Sn > Pb > (H) > Cu > Hg > Ag > Au.

Answer

Atomic mass

Answer

Colour

Answer

Cost

Question 3

Isothermal process has:‌​‍

Accepted Answer

ΔU = 0 for ideal gas; heat equals work — T constant → ΔU = nCvΔT = 0 for ideal gas. Q = W = nRT ln(V2/V1).‌​‍

Answer

W = 0

Answer

ΔS = 0

Answer

Q = 0

Question 4

Electroplating is:

Accepted Answer

Coating one metal with another using electrolysis — Electroplating deposits a thin metal layer (Cr, Ni, Ag, Au) on object using electrolysis.

Answer

Painting metals

Answer

Galvanising

Answer

Same as soldering

Question 5

Many drugs are primarily excreted by the kidneys. Which process within the nephron involves the movement of substances from the blood into the renal tubule, representing the initial step of urine formation?

Accepted Answer

B. Glomerular filtration — Glomerular filtration is the initial step in urine formation, occurring in the renal corpuscle. During this process, blood plasma, excluding large proteins and blood cells, is filtered from the glomerulus into Bowman's capsule to form the filtrate. Tubular reabsorption and secretion occur later in the renal tubules.

Answer

A. Tubular reabsorption

Answer

C. Tubular secretion

Answer

D. Micturition

Question 6

NSS founded by:‌​‍

Accepted Answer

Mannathu Padmanabhan — Nair Service Society (1914).‌​‍

Answer

Guru

Answer

Ayyankali

Answer

Dr Palpu

Question 7

Which Indian state holds the distinction of being the first to achieve universal primary education and subsequently declare 100% literacy, a significant milestone that inspired educational reforms across the nation?

Accepted Answer

B. Kerala — Kerala was the first state in India to achieve 100% literacy, a remarkable feat resulting from sustained public education campaigns and social reforms. This accomplishment set a national benchmark for educational development and inspired similar initiatives in other states like Goa and Tamil Nadu, which also boast high literacy rates but were not the first.

Answer

A. Tamil Nadu

Answer

C. Goa

Answer

D. Himachal Pradesh

Question 8

Which of the following awards is specifically conferred by the Government of Kerala to recognize outstanding contributions in the field of literature?

Accepted Answer

A. Ezhuthachan Puraskaram — The Ezhuthachan Puraskaram is a prestigious literary award instituted by the Government of Kerala to honor individuals who have made significant contributions to Malayalam literature. The Jnanpith Award and Sahitya Akademi Award are national-level honors, while the Padma Vibhushan is a broader civilian award not specific to literature.

Answer

B. Jnanpith Award

Answer

C. Sahitya Akademi Award

Answer

D. Padma Vibhushan

Question 9

Conflict theory in sociology emphasises:‌​‍

Accepted Answer

Power, inequality, class conflict — Conflict theory (Marx, Dahrendorf, C. ‌​‍Wright Mills): society shaped by competition for scarce resources; dominant groups maintain power.

Answer

Social harmony

Answer

Face-to-face interaction

Answer

Cultural symbols

Question 10

India joined BRICS in:‌​‍

Accepted Answer

2006 (as BRIC) — BRIC (Brazil, Russia, India, China) formed 2006; became BRICS with South Africa's inclusion in 2010.‌​‍

Answer

2010 (when S Africa added)

Answer

2011

Answer

2001

DCOA Mixed Practice Test #29