VFA Mixed Practice Test #248

Question 1

Study of body functions:‌​‍

Accepted Answer

Physiology — Physiology.‌​‍

Answer

Pathology

Answer

Histology

Answer

Anatomy

Question 2

The colour of light with the longest wavelength is:‌​‍

Accepted Answer

Red — Red has the longest wavelength in visible spectrum. ‌​‍Violet has the shortest. (VIBGYOR order).

Answer

Violet

Answer

Blue

Answer

Green

Question 3

Methotrexate, an antimetabolite used in chemotherapy, exerts its cytotoxic effect by inhibiting which key enzyme involved in folate metabolism and DNA synthesis?

Accepted Answer

B. Dihydrofolate reductase (DHFR) — Methotrexate is a folic acid analog that competitively inhibits dihydrofolate reductase (DHFR). DHFR is essential for converting dihydrofolate to tetrahydrofolate, a cofactor required for the synthesis of purine nucleotides and thymidylate, which are precursors for DNA synthesis. By inhibiting DHFR, methotrexate blocks DNA replication and cell division.

Answer

A. Thymidylate synthase

Answer

C. DNA gyrase

Answer

D. Ribonucleotide reductase

Question 4

G4 nations seeking UN Security Council permanent seats:‌​‍

Accepted Answer

Brazil, Germany, India, Japan — G4 (formed 2004) supports each other's bid for UNSC permanent seats. ‌​‍Opposed by 'Uniting for Consensus' group (Italy, Pakistan, others).

Answer

USSR countries

Answer

BRICS minus Russia

Answer

US, UK, France, Germany

Question 5

First Malayalam prose writer:‌​‍

Accepted Answer

Arnos Pathiri (1700s) — Arnos Pathiri — early Malayalam prose.‌​‍

Answer

Basheer

Answer

CV Raman Pillai

Answer

Ezhuthachan

Question 6

Plaster of Paris formula:‌​‍

Accepted Answer

CaSO₄·½H₂O — CaSO₄·½H₂O — Calcium sulphate hemihydrate.‌​‍

Answer

CaCO₃

Answer

Ca(OH)₂

Answer

CaSO₄·2H₂O

Question 7

CUET exam for:‌​‍

Accepted Answer

College Admission — Common University Entrance Test.‌​‍

Answer

Engineering

Answer

School

Answer

Civil Services

Question 8

Nylon 6,6 is made from:

Accepted Answer

Hexamethylenediamine + adipic acid — Condensation polymer (polyamide). Named after 6+6 carbons. Strong, elastic — used in ropes, clothing.

Answer

Ethylene

Answer

Isoprene

Answer

Styrene

Question 9

According to Spearman's Two-Factor Theory of Intelligence, which of the following best describes the 'g' factor?

Accepted Answer

B. It represents a general mental energy that influences all cognitive abilities. — Spearman's 'g' factor refers to a general mental ability that underlies all cognitive tasks. Option B correctly describes this as a broad, influencing factor, while options A, C, and D refer to specific or secondary aspects of intelligence that are not the 'g' factor.

Answer

A. It is a specific ability that varies across different cognitive tasks.

Answer

C. It is a measure of crystallized intelligence that improves with age.

Answer

D. It is a narrow skill related to problem-solving in mathematics.

Question 10

Which of the following hormones is secreted by the posterior pituitary gland?

Accepted Answer

C. Oxytocin — Oxytocin is stored and secreted by the posterior pituitary gland, whereas growth hormone, prolactin, and ACTH are secreted by the anterior pituitary.

Answer

A. Growth hormone

Answer

B. Prolactin

Answer

D. Adrenocorticotropic hormone

VFA Mixed Practice Test #248