VFA Mixed Practice Test #764

Question 1

A pumped-storage hydroelectric plant works by:

Accepted Answer

Pumping water uphill during low-demand periods and releasing it during peak demand — Pumped storage acts as a giant battery — balances grid supply and demand.

Answer

Pumping water from sea

Answer

Solar heating

Answer

Using tides

Question 2

Displacement current was introduced by:‌​‍

Accepted Answer

Maxwell — To maintain consistency of Ampere's law with changing E field. ‌​‍ID = ε₀ dΦE/dt. Led to EM waves.

Answer

Faraday

Answer

Hertz

Answer

Ampere

Question 3

In Bruner's theory of cognitive development, the 'spiral curriculum' is based on the principle that learning should be structured to revisit topics with increasing depth and complexity. Which of the following best describes this principle?

Accepted Answer

B. Topics are introduced in a spiral manner, revisited at higher levels. — The spiral curriculum involves revisiting foundational topics with increasing complexity and depth to reinforce and build upon prior knowledge. Linear processes (A) and rote memorization (C) are not central to Bruner's approach. Introducing abstract concepts to young children (D) is supported by Bruner's enactive-iconic-symbolic framework.

Answer

A. Learning is a linear process with no repetition.

Answer

C. Learning is best achieved through rote memorization of facts.

Answer

D. Abstract concepts should never be introduced to young children.

Question 4

As per the Kerala Land Reforms Act Section 82, maximum land permissible for an individual is:

Accepted Answer

7.5 acres — Individual cap 7.5 acres; family cap 15 acres (up to 20 acres if more than 5 members).

Answer

5 acres

Answer

10 acres

Answer

15 acres

Question 5

Onam is celebrated in which Malayalam month?‌​‍

Accepted Answer

Chingam — Onam is celebrated in the month of Chingam (August-September), commemorating the mythical King Mahabali's annual return to Kerala.‌​‍

Answer

Medam

Answer

Thulam

Answer

Karkidakam

Question 6

Refractive index of water is approximately:‌​‍

Accepted Answer

1.33 — n_water ≈ 1.33; diamond ~2.42; glass ~1.5.‌​‍

Answer

1.50

Answer

2.42

Answer

1.00

Question 7

Osteoporosis deficiency:‌​‍

Accepted Answer

Calcium + Vitamin D — Bone density loss.‌​‍

Answer

Iron

Answer

B12

Answer

Iodine

Question 8

Translocation of food from leaves to other parts of the plant takes place through:‌​‍

Accepted Answer

Phloem — Phloem transports sugars produced by photosynthesis throughout the plant.‌​‍

Answer

Epidermis

Answer

Xylem

Answer

Cambium

Question 9

Which date is observed as 'National Education Day' in India to commemorate the birth anniversary of Maulana Abul Kalam Azad?

Accepted Answer

A. November 11 — National Education Day is observed on November 11 to honor Maulana Abul Kalam Azad, India's first Education Minister, who played a pivotal role in shaping the country's education system. The other dates correspond to different national observances (Children's Day on November 14, Gandhi Jayanti on October 2, and Christmas on December 25).

Answer

B. November 14

Answer

C. October 2

Answer

D. December 25

Question 10

Sonnet has how many lines:

Accepted Answer

14 — Petrarchan/Italian: octave (8) + sestet (6). Shakespearean/English: 3 quatrains + couplet (ABAB CDCD EFEF GG).

Answer

10

Answer

20

Answer

16

VFA Mixed Practice Test #764