VFA Mixed Practice Test #789

Question 1

National Science Day is on:‌​‍

Accepted Answer

28 Feb — 28 February (C.V. Raman discovered Raman Effect on this day, 1928).‌​‍

Answer

11 May

Answer

15 Jan

Answer

21 Jun

Question 2

The plan-monitoring software developed by Information Kerala Mission for LSG Department is:‌​‍

Accepted Answer

Sulekha — 'Sulekha' tracks annual decentralised plan projects of local governments.‌​‍

Answer

Sugama

Answer

Sanchaya

Answer

Samvedhitha

Question 3

Andreas Vesalius is known for pioneering work in:‌​‍

Accepted Answer

Human anatomy through dissection — Vesalius's 'De humani corporis fabrica' (1543) revolutionised anatomy.‌​‍

Answer

Chemistry

Answer

Astronomy

Answer

Physics

Question 4

Dolly (cloned sheep) born:

Accepted Answer

1996 — First cloned mammal, 1996 (announced 1997).

Answer

1990

Answer

2000

Answer

2005

Question 5

Which of the following reformers is known for founding the 'Sadhu Jana Paripalana Sangham' to uplift the depressed classes in Kerala during the early 20th century?

Accepted Answer

B. Ayyankali — Ayyankali founded the Sadhu Jana Paripalana Sangham in 1907 to address the social and educational upliftment of the depressed classes in Kerala. Chattampi Swamikal was a social reformer but not associated with this organisation. Vagbhatananda worked for the renaissance of Ezhava community but not through this sangham. K. Kelappan was a prominent Gandhian leader and not directly linked to this initiative.

Answer

A. Chattampi Swamikal

Answer

C. Vagbhatananda

Answer

D. K. Kelappan

Question 6

Pollen grain wall — outer layer:‌​‍

Accepted Answer

Exine (sporopollenin — most resistant biological material) — Sporopollenin resists enzymes, acids, bases, high temperature. ‌​‍Pollen fossils preserved for millions of years.

Answer

Cellulose

Answer

Intine

Answer

Endosperm

Question 7

In a nuclear fission reactor, moderators like heavy water (D2O) or graphite play a crucial role. What is their primary function in sustaining a controlled chain reaction?

Accepted Answer

C. To slow down fast neutrons, thereby increasing the likelihood of their absorption by uranium-235 nuclei. — Moderators are used to slow down the fast neutrons produced during fission. These 'thermal' neutrons are much more likely to be absorbed by uranium-235 nuclei, which is essential for sustaining a controlled chain reaction. Absorbing excess neutrons is the role of control rods, while coolants remove heat, and reflectors reduce neutron leakage.

Answer

A. To absorb excess neutrons to prevent the reactor from going supercritical.

Answer

B. To convert kinetic energy of neutrons into heat for power generation.

Answer

D. To reflect neutrons back into the reactor core, reducing neutron leakage.

Question 8

Elevated levels of serum amylase and lipase are highly indicative of inflammation or damage to which organ?

Accepted Answer

C. Pancreas — Amylase and lipase are digestive enzymes primarily produced by the pancreas. Significantly elevated levels of both enzymes in the serum are highly specific and sensitive indicators of acute pancreatitis or other pancreatic damage. Other organs like the gallbladder, stomach, or spleen do not release these enzymes in high concentrations in response to inflammation.

Answer

A. Gallbladder

Answer

B. Stomach

Answer

D. Spleen

Question 9

Before beginning a new unit on the circulatory system, a biology teacher presents a short overview highlighting the main functions of the heart, blood vessels, and blood, and connects these to the students' prior knowledge of the human body. This teaching strategy is an example of applying which of Ausubel's concepts?

Accepted Answer

B. Advance organizer — David Ausubel emphasized the importance of meaningful learning and proposed advance organizers as a key tool. An advance organizer is introductory material presented before a new learning task, designed to help learners connect new information to their existing cognitive structures by providing a conceptual framework. Reciprocal teaching is a Vygotskian strategy, and rote learning is the opposite of meaningful learning.

Answer

A. Reciprocal teaching

Answer

C. Inductive reasoning

Answer

D. Rote learning

Question 10

Which Kerala social reformer is popularly known as a 'saint without saffron and kamandalu'?‌​‍

Accepted Answer

Sree Narayana Guru — Sree Narayana Guru was called a 'saint without saffron and kamandalu' for rejecting such external trappings.‌​‍

Answer

Ayya Swamikal

Answer

Chattampi Swamikal

Answer

Vagbhatananda Swamikal

VFA Mixed Practice Test #789