VFA Mixed Practice Test #228

Question 1

Echinoderms:‌​‍

Accepted Answer

Starfish, sea urchin — Starfish, sea urchins — radial symmetry.‌​‍

Answer

Sponges

Answer

Jellyfish

Answer

Octopus

Question 2

Cyberbullying refers to:

Accepted Answer

Bullying/harassment through digital means (social media, messaging) — Cyberbullying includes hateful messages, impersonation, doxxing via online platforms.

Answer

Physical bullying

Answer

Game disputes

Answer

Strict parenting

Question 3

IPCC reports frequently highlight 'tipping points' in the Earth's climate system. Which of the following best describes the primary concern associated with reaching such a tipping point?

Accepted Answer

B. Irreversible and abrupt changes to the climate system with profound global consequences. — Tipping points refer to critical thresholds beyond which a natural system can undergo rapid and often irreversible changes, leading to significant global consequences. The primary concern is that crossing these thresholds could fundamentally alter climate patterns and ecosystems, rather than leading to a cessation of warming or temporary shifts. While geoengineering is a potential response, it is not the primary concern itself.

Answer

A. The immediate cessation of all global warming trends.

Answer

C. A temporary increase in global temperatures followed by a rapid return to pre-industrial levels.

Answer

D. Enhanced opportunities for geoengineering solutions to reverse climate change effects.

Question 4

The critical angle of glass (n ≈ 1.5) for total internal reflection in air is approximately:‌​‍

Accepted Answer

42° — sin⁻¹(1/1.5) ≈ 41.8° ≈ 42°.‌​‍

Answer

90°

Answer

62°

Answer

48°

Question 5

To ensure safe drinking water in areas where municipal treatment is unreliable, which simple household method is most effective in inactivating a wide range of microbial pathogens, including bacteria, viruses, and protozoa?

Accepted Answer

C. Boiling — Boiling water vigorously for at least one minute is a highly effective method to kill or inactivate most disease-causing bacteria, viruses, and protozoa, making the water safe for consumption. Filtering through cloth only removes larger particles, storing doesn't disinfect, and adding salt is not a purification method.

Answer

A. Filtering through cloth

Answer

B. Storing in a cool, dark place

Answer

D. Adding salt

Question 6

Highest mountain Antarctica:

Accepted Answer

Vinson Massif — Vinson Massif.

Answer

Erebus

Answer

Tyree

Answer

Shinn

Question 7

Velu Thampi Dalawa revolted:

Accepted Answer

1809 — 1808-09 against British.

Answer

1947

Answer

1857

Answer

1891

Question 8

The 'Balamithra' project is a significant initiative by the Kerala government in the education sector. What is the primary focus of the Balamithra project?

Accepted Answer

B. To provide psychological support and counseling services to school children and parents. — The Balamithra project in Kerala is specifically designed to address the mental health and psychosocial well-being of school children. It focuses on providing psychological support, counseling, and guidance to students and their parents, especially in times of stress or emotional difficulty. The other options describe different educational initiatives or general provisions, not the specific focus of Balamithra.

Answer

A. To ensure the availability of nutritious mid-day meals for all students.

Answer

C. To promote early childhood care and education for children below six years.

Answer

D. To facilitate digital learning platforms and infrastructure in government schools.

Question 9

Republic Day 2024 chief guest:‌​‍

Accepted Answer

Macron — President Emmanuel Macron.‌​‍

Answer

Modi

Answer

Biden

Answer

Putin

Question 10

In a healthcare setting, what is considered the single most effective measure to prevent the spread of common healthcare-associated infections (HAIs)?

Accepted Answer

C. Hand hygiene — Hand hygiene, including handwashing with soap and water or using alcohol-based hand rub, is consistently proven to be the most critical measure to interrupt the transmission of pathogens in healthcare. While other measures are important, hand hygiene has the broadest impact on preventing HAIs.

Answer

A. Regular disinfection of surfaces

Answer

B. Proper use of personal protective equipment (PPE)

Answer

D. Isolation of infected patients

VFA Mixed Practice Test #228