VFA Mixed Practice Test #41

Question 1

The pH value of human blood is approximately:

Accepted Answer

7.4 — Normal human blood pH is approximately 7.35-7.45 (slightly alkaline). A pH below 7 is acidic, above 7 is alkaline. (NCERT Class 10 Science)

Answer

6.5

Answer

7.0

Answer

8.0

Question 2

Kerala's first lady IPS officer:‌​‍

Accepted Answer

B. Sandhya — B. Sandhya — first woman IPS of Kerala cadre.‌​‍

Answer

Merin Joseph

Answer

Lakshmi Krishnan

Answer

Kanchan C. Bhattacharya

Question 3

Convex mirror used in:‌​‍

Accepted Answer

Rear-view mirror — Wider field of view.‌​‍

Answer

Headlights

Answer

Solar cooker

Answer

Magnifying glass

Question 4

Chandrayaan-3 landing date:‌​‍

Accepted Answer

23 Aug 2023 — 23 August 2023 — soft landing near lunar south pole.‌​‍

Answer

24 Aug 2023

Answer

22 Aug 2023

Answer

14 Jul 2023

Question 5

Jnanpith Award 2023:‌​‍

Accepted Answer

Jagadguru Rambhadracharya and Gulzar — Joint 58th Jnanpith — Rambhadracharya (Sanskrit), Gulzar (Urdu).‌​‍

Answer

Nilmani Phookan

Answer

Akkitham

Answer

Damodar Mauzo

Question 6

Angiosperms have seeds enclosed in:‌​‍

Accepted Answer

Fruit (from ovary) — Flowering plants. ‌​‍Double fertilisation unique. Monocots (1 cotyledon) and Dicots (2).

Answer

Ovule

Answer

Cone

Answer

Sporangium

Question 7

How many terminals does a transistor have?‌​‍

Accepted Answer

Three terminals (E, B, C) — Emitter, Base, Collector. NPN and PNP. Used as amplifier and switch.‌​‍

Answer

Two terminals

Answer

Only one

Answer

Four terminals

Question 8

Which literary form is MOST effective for teaching complex scientific concepts to high school students, given that it combines narrative with factual information?

Accepted Answer

D. Graphic novel — A graphic novel effectively combines visual and textual elements, making abstract or complex scientific concepts more accessible and engaging for students. Short stories and fables are narrative forms that may lack sufficient factual detail, while expository essays, though informative, are less visually engaging for classroom retention.

Answer

A. Short story

Answer

B. Fable

Answer

C. Expository essay

Question 9

ISRO's PSLV stands for:‌​‍

Accepted Answer

Polar Satellite Launch Vehicle — PSLV = Polar Satellite Launch Vehicle — ISRO's workhorse rocket.‌​‍

Answer

Primary Satellite Launch Vehicle

Answer

Payload Satellite Launch Vehicle

Answer

Power Satellite Launch Vehicle

Question 10

A 35-year-old mother delivers a term baby weighing 2.8 kg via vaginal delivery. The baby is noted to have a single transverse crease across the palm, hypotonia, and a protruding tongue. Which of the following congenital conditions is MOST likely?

Accepted Answer

A. Congenital hypothyroidism — The clinical features (single transverse palmar crease, hypotonia, protruding tongue) are classic for congenital hypothyroidism, which requires immediate thyroid function tests and levothyroxine therapy to prevent intellectual disability. Down syndrome typically presents with upslanting palpebral fissures, flat nasal bridge, and hypotonia but not necessarily a single palmar crease. Turner and Fragile X syndromes have distinct phenotypic features not described here.

Answer

B. Down syndrome

Answer

C. Turner syndrome

Answer

D. Fragile X syndrome

VFA Mixed Practice Test #41