VFA Mixed Practice Test #368

Question 1

6G India target:‌​‍

Accepted Answer

2030 — 2030.‌​‍

Answer

2028

Answer

2025

Answer

2035

Question 2

A's father's sister is A's:

Accepted Answer

Aunt — Paternal aunt.

Answer

Mother

Answer

Grandmother

Answer

Sister

Question 3

Acceleration due to gravity on Earth is approximately:

Accepted Answer

9.8 m/s² — g ≈ 9.81 m/s² at sea level; often rounded to 10 m/s² for calculations.

Answer

1.6 m/s²

Answer

10 m/s² exactly

Answer

11.2 m/s²

Question 4

Kerala State was formed on:‌​‍

Accepted Answer

1 November 1956 — Kerala formed under States Reorganisation Act 1956 by merging Travancore-Cochin with Malabar district of Madras State.‌​‍

Answer

15 August 1947

Answer

1 July 1949

Answer

26 January 1950

Question 5

What is the equation of a line with slope m and y-intercept c?‌​‍

Accepted Answer

y = mx + c — Slope-intercept form. Point-slope: y - y₁ = m(x - x₁). General: Ax+By+C=0.‌​‍

Answer

y - mx = 0

Answer

y + mx = c

Answer

x = my + c

Question 6

Nylon 6,6 is a synthetic polymer renowned for its high tensile strength, elasticity, and abrasion resistance, making it suitable for various industrial applications. Considering its chemical structure and synthesis, which of the following statements accurately describes the formation and a key application of Nylon 6,6?

Accepted Answer

B. It is formed by the condensation polymerization of hexamethylenediamine and adipic acid, and is primarily used in manufacturing ropes and fabrics. — Nylon 6,6 is a polyamide synthesized through condensation polymerization, involving the reaction between hexamethylenediamine and adipic acid, where water molecules are eliminated. Its robust mechanical properties, including high tensile strength and abrasion resistance, make it ideal for industrial applications such as ropes, textiles, and engineering plastics. Option A describes Nylon 6 and misidentifies its application; Option C describes polyethylene/polypropylene and misidentifies the application; Option D describes Polyethylene Terephthalate (PET).

Answer

A. It is formed by the addition polymerization of caprolactam and is primarily used in manufacturing electrical insulators.

Answer

C. It is formed by the addition polymerization of ethene and propene monomers, and is primarily used in non-stick coatings.

Answer

D. It is formed by the condensation polymerization of terephthalic acid and ethylene glycol, and is primarily used in making high-strength plastic bottles.

Question 7

Mount Etna in:‌​‍

Accepted Answer

Italy (Sicily) — Europe's most active.‌​‍

Answer

Iceland

Answer

Greece

Answer

Japan

Question 8

The theory of gravitation was formulated by:‌​‍

Accepted Answer

Isaac Newton — Newton's 'Principia Mathematica' (1687) formulated the law of universal gravitation.‌​‍

Answer

Galileo

Answer

Kepler

Answer

Copernicus

Question 9

C-295 aircraft:‌​‍

Accepted Answer

Transport — Tata-Airbus — Medium transport built in Vadodara.‌​‍

Answer

UAV

Answer

Helicopter

Answer

Fighter

Question 10

A teacher notices that students are struggling to grasp the concept of 'osmosis' during the 'Explain' phase of the 5E model. What should the teacher do next to address this gap in understanding?

Accepted Answer

B. Provide additional examples, analogies, or demonstrations to clarify the concept before proceeding. — The 'Explain' phase is where the teacher clarifies concepts, so addressing misconceptions with scaffolding (Option B) is appropriate. Options A and C avoid addressing the gap, while Option D delays instruction. Constructivism emphasizes timely feedback and support.

Answer

A. Move on to the next topic to avoid wasting time.

Answer

C. Assign a worksheet with multiple-choice questions on osmosis for independent practice.

Answer

D. Ask students to research osmosis at home and submit a report the next day.

VFA Mixed Practice Test #368