VFA Mixed Practice Test #376

Question 1

Which technique is most effective for maintaining student attention during a 45-minute lecture on a complex topic?

Accepted Answer

B. Using visual aids and asking periodic recall questions to check understanding — Using visual aids and periodic recall questions (Option B) actively engages students by breaking the lecture into manageable segments and reinforcing learning. Continuous lecturing (Option A) leads to cognitive overload, while phone use (Option C) and doodling (Option D) are distractions that reduce focus.

Answer

A. Delivering the entire lecture without pauses or breaks

Answer

C. Allowing students to use their phones during the lecture to take notes

Answer

D. Encouraging students to doodle as a way to stay engaged

Question 2

First Chief Justice of Kerala HC:‌​‍

Accepted Answer

K.T. Koshi — Justice K.T. Koshi.‌​‍

Answer

P.T. Raman Nair

Answer

V.R. Krishna Iyer

Answer

M.S. Menon

Question 3

Hershey-Chase experiment (1952):‌​‍

Accepted Answer

Proved proteins are genetic material — ³²P labeled DNA; ³⁵S labeled protein. ‌​‍Only ³²P entered bacterial host — DNA transmits heredity.

Answer

Proved DNA is genetic material (using T2 phage and ³⁵S/³²P labeling)

Answer

Proved RNA

Answer

No conclusion

Question 4

Silent Valley protected after:‌​‍

Accepted Answer

1970s movement — Silent Valley Movement (1970s-80s) saved the forest from hydro project.‌​‍

Answer

2000 agitation

Answer

1950 decision

Answer

1990 protest

Question 5

Which of the following is NOT a characteristic of alkaloids?

Accepted Answer

C. They are soluble in water and insoluble in organic solvents — Alkaloids are nitrogen-containing compounds with bitter taste and pharmacological activity, but they are typically soluble in organic solvents (e.g., ethanol, chloroform) rather than water. Morphine, for example, is poorly water-soluble.

Answer

A. They are nitrogen-containing compounds

Answer

B. They are generally bitter in taste

Answer

D. They often have pharmacological activity

Question 6

Tuberculosis is caused by:‌​‍

Accepted Answer

Mycobacterium tuberculosis (bacterium) — TB is a bacterial disease; discovered by Robert Koch (1882).‌​‍

Answer

A protozoan

Answer

A fungus

Answer

A virus

Question 7

tRNA:‌​‍

Accepted Answer

Transfers amino acids — Transfer RNA in translation.‌​‍

Answer

DNA

Answer

Ribosomal

Answer

mRNA

Question 8

Lake Michigan is located entirely within which country?‌​‍

Accepted Answer

USA only — Entirely in USA (unique Great Lake).‌​‍

Answer

US-Canada

Answer

Canada

Answer

Mexico

Question 9

First Jnanpith from Kerala:

Accepted Answer

G. Sankara Kurup — G. Sankara Kurup (1965) — for Odakkuzhal.

Answer

Pottekkatt

Answer

Thakazhi

Answer

MT

Question 10

A 12-month-old child is brought for a routine check-up. The mother reports that the child can pull himself up to stand and move around by holding onto furniture, but is not yet walking independently. Which of the following gross motor milestones is expected for a child of this age?

Accepted Answer

C. Pulls to stand and cruises along furniture — At 12 months, pulling to stand and cruising along furniture are typical gross motor milestones. Walking independently usually develops between 12-15 months. Sitting without support is typically achieved by 6-8 months, and climbing stairs with alternating feet is a much later milestone, around 2-3 years.

Answer

A. Sits without support for extended periods

Answer

B. Walks independently without assistance

Answer

D. Climbs stairs with alternating feet

VFA Mixed Practice Test #376