DCOA Mixed Practice Test #375

Question 1

Kerala's first IT park:

Accepted Answer

Technopark — Technopark, Thiruvananthapuram — India's first technology park (1990).

Answer

Infopark

Answer

Cyberpark

Answer

SmartCity

Question 2

A patient is diagnosed with an obstruction in the superior vena cava. This would primarily impair venous return from which part of the body to the heart?

Accepted Answer

A. Head, neck, and upper limbs — The superior vena cava collects deoxygenated blood from the head, neck, upper limbs, and thorax and empties it into the right atrium. An obstruction here would impede venous return from these specific regions. The inferior vena cava collects blood from the abdomen and lower limbs. The lungs return oxygenated blood via pulmonary veins, and the liver and digestive organs drain into the hepatic portal system, eventually to the inferior vena cava.

Answer

B. Abdomen and lower limbs

Answer

C. Lungs

Answer

D. Liver and digestive organs

Question 3

Hormone for fruit ripening:‌​‍

Accepted Answer

Ethylene — Ethylene gas ripens fruits.‌​‍

Answer

Abscisic acid

Answer

Auxin

Answer

Cytokinin

Question 4

SI unit of force:‌​‍

Accepted Answer

Newton — Newton (N) = kg⋅m/s².‌​‍

Answer

Joule

Answer

Watt

Answer

Pascal

Question 5

mRNA carries the genetic code from:‌​‍

Accepted Answer

DNA in nucleus to ribosome — Messenger RNA is transcribed from DNA and translated at ribosomes.‌​‍

Answer

Ribosome to nucleus

Answer

Mitochondria to cell wall

Answer

One cell to another

Question 6

Wrought iron contains:‌​‍

Accepted Answer

~0.1% carbon (very low) — Wrought iron is purest form, very low C; cast iron 2-4% C; steel 0.1-2% C.‌​‍

Answer

High sulphur

Answer

Silica

Answer

4% carbon

Question 7

A hydraulic lift system uses two pistons, one with a small cross-sectional area (A1) and the other with a larger cross-sectional area (A2). If a force F1 is applied to the smaller piston, causing it to move downwards by a distance d1, how does the force exerted by the larger piston (F2) and its upward displacement (d2) relate to F1 and d1, assuming ideal conditions?

Accepted Answer

B. F2 > F1 and d2 < d1 — According to Pascal's principle, the pressure applied to the small piston (P = F1/A1) is transmitted undiminished to the larger piston. Since the larger piston has a greater area (A2 > A1), it experiences a magnified force (F2 = P * A2, hence F2 > F1). By the principle of conservation of energy, the work input must equal the work output in an ideal system (F1 * d1 = F2 * d2). Therefore, to compensate for the increased force F2, the larger piston must move a proportionally smaller distance (d2 < d1).

Answer

A. F2 = F1 and d2 = d1

Answer

C. F2 < F1 and d2 > d1

Answer

D. F2 = F1 and d2 < d1

Question 8

In a rural block of Kerala, there's a significant concern regarding the enrolment and retention of children from marginalized communities in elementary schools, coupled with a lack of basic facilities like toilets and drinking water. Which government program was specifically designed to address these issues by promoting universal elementary education, improving school infrastructure, and ensuring equitable access and quality?

Accepted Answer

B. Sarva Shiksha Abhiyan (SSA) — Sarva Shiksha Abhiyan (SSA) was a flagship program aimed at universalizing elementary education, focusing on enrolment, retention, quality improvement, and bridging social and gender gaps, including infrastructure development. RMSA focused on secondary education, NSDM on skill development, and MDMS on nutritional support.

Answer

A. Rashtriya Madhyamik Shiksha Abhiyan (RMSA)

Answer

C. National Skill Development Mission (NSDM)

Answer

D. Mid-Day Meal Scheme (MDMS)

Question 9

A Trojan Horse in computing is:‌​‍

Accepted Answer

Malware disguised as legitimate software — A Trojan Horse = malicious program that disguises itself as useful software. ‌​‍Named after the Greek myth.

Answer

A fast computer

Answer

A type of RAM

Answer

A networking cable

Question 10

Number of rivers in Kerala:

Accepted Answer

44 — 44 rivers (41 west-flowing + 3 east-flowing).

Answer

34

Answer

41

Answer

50

DCOA Mixed Practice Test #375