VFA Mixed Practice Test #614

Question 1

A teacher observes that students are more motivated to participate in group projects when they are allowed to choose their own topics rather than being assigned one. This observation aligns with which motivational principle?

Accepted Answer

B. Autonomy (Self-Determination Theory) — Allowing students to choose topics satisfies their need for autonomy, a key component of Self-Determination Theory. Extrinsic rewards involve external incentives, esteem needs relate to self-worth, and classical conditioning involves stimulus-response associations.

Answer

A. Extrinsic rewards

Answer

C. Maslow's Esteem needs

Answer

D. Classical conditioning

Question 2

Guard cells control the opening and closing of:

Accepted Answer

Stomata — Kidney-shaped guard cells regulate stomatal aperture for gas exchange.

Answer

Xylem vessels

Answer

Root hairs

Answer

Lenticels

Question 3

Technetium-99m (Tc-99m) is a widely used radioisotope in diagnostic imaging. What is its primary advantage for this purpose?

Accepted Answer

C. It has a short half-life and emits gamma rays suitable for external detection — Technetium-99m is ideal for diagnostic imaging due to its relatively short half-life (6 hours), which minimizes patient radiation exposure after the procedure. Crucially, it emits pure gamma rays, which can be easily detected by external gamma cameras and provide high-resolution images without significant tissue damage. Alpha particles are highly damaging and unsuitable for diagnostic imaging.

Answer

A. It has a very long half-life, allowing for extended imaging

Answer

B. It emits alpha particles, providing high tissue penetration

Answer

D. It is inexpensive to produce in large quantities

Question 4

Vaikunta Swamikal founded Samatva Samajam in:‌​‍

Accepted Answer

1836 — Ayya Vaikundar founded Samatva Samajam in 1836 (Travancore).‌​‍

Answer

1837

Answer

1835

Answer

1840

Question 5

Nuclear fusion occurs in:‌​‍

Accepted Answer

Sun and stars — Proton-proton chain in Sun. ‌​‍Hydrogen bombs use fusion. Controlled fusion (ITER) under development.

Answer

Uranium

Answer

Nuclear reactors

Answer

Atomic bombs

Question 6

Which of the following is the primary site for the synthesis of urea in the human body?

Accepted Answer

A. Liver — The liver is the primary site for urea synthesis through the urea cycle, converting toxic ammonia into urea for excretion. The kidneys filter urea but do not synthesize it. The small intestine and pancreas are not involved in urea production.

Answer

B. Kidneys

Answer

C. Small intestine

Answer

D. Pancreas

Question 7

NEET is for:‌​‍

Accepted Answer

Medical — Medical (MBBS/BDS).‌​‍

Answer

Commerce

Answer

Engineering

Answer

Law

Question 8

Which part of the human brain is primarily responsible for maintaining posture, balance, and coordinating voluntary movements, ensuring smooth and precise actions?

Accepted Answer

C. Cerebellum — The cerebellum plays a vital role in motor control, coordinating muscle movements, maintaining balance, and regulating posture. The cerebrum is involved in higher-level functions, the brainstem controls vital involuntary functions, and the thalamus acts as a relay station for sensory information.

Answer

A. Cerebrum

Answer

B. Brainstem

Answer

D. Thalamus

Question 9

Figure of speech in 'Fair is foul, and foul is fair' (Shakespeare):

Accepted Answer

Oxymoron / Paradox — Contradictory terms juxtaposed — oxymoron; the whole line is a paradox.

Answer

Metaphor

Answer

Simile

Answer

Metonymy

Question 10

Kathakali originated in:‌​‍

Accepted Answer

Kerala — Classical dance-drama from Kerala.‌​‍

Answer

Tamil Nadu

Answer

Karnataka

Answer

AP

VFA Mixed Practice Test #614