VFA Mixed Practice Test #786

Question 1

Which of the following is an example of a voluntary muscle?

Accepted Answer

C. Biceps brachii — Voluntary muscles are those that can be consciously controlled by an individual. The biceps brachii, responsible for flexing the arm, is a skeletal muscle and is under voluntary control. Cardiac muscle and intestinal wall muscles (smooth muscle) are involuntary, while the diaphragm, though skeletal, has both voluntary and involuntary control, but its primary function is autonomic.

Answer

A. Cardiac muscle

Answer

B. Muscles of the intestinal wall

Answer

D. Diaphragm

Question 2

Which component of blood is primarily responsible for initiating the process of blood clotting to prevent excessive bleeding after an injury?

Accepted Answer

D. Platelets — Platelets (thrombocytes) are small, anucleated cell fragments in the blood that play a crucial role in hemostasis, the process of stopping bleeding. Upon injury, platelets aggregate at the site of damage and release factors that initiate the coagulation cascade, forming a blood clot. Red blood cells transport oxygen, white blood cells fight infection, and plasma is the liquid matrix of blood.

Answer

A. Red blood cells

Answer

B. White blood cells

Answer

C. Plasma

Question 3

A transformer is a device used to:‌​‍

Accepted Answer

Step up or step down AC voltage — Transformers work on mutual induction; cannot work on DC.‌​‍

Answer

Convert AC to DC

Answer

Store charge

Answer

Generate electricity

Question 4

A teacher observes that a significant number of students struggle with understanding abstract mathematical concepts despite various teaching methods. If they decide to initiate an action research project, what would be the *most appropriate first step*?

Accepted Answer

C. Clearly defining the specific problem, gathering initial data on student difficulties, and setting a focused research question. — The first step in the 'Plan' phase of an action research cycle is to identify and clearly define the problem, gather initial diagnostic data to understand its scope, and formulate a specific research question. Implementing solutions or brainstorming without a clear problem definition and initial data is premature. Reviewing literature is a supportive activity within the planning phase.

Answer

A. Implementing a new visual aid immediately to explain the concepts.

Answer

B. Reviewing existing literature on teaching abstract math concepts.

Answer

D. Collaborating with other math teachers to brainstorm potential solutions.

Question 5

The direction of force on a current-carrying conductor in a magnetic field is given by:‌​‍

Accepted Answer

Fleming's Left-Hand Rule — Forefinger = field, middle = current, thumb = force/motion (used in motors).‌​‍

Answer

Fleming's Right-Hand Rule

Answer

Right-hand thumb rule

Answer

Lenz's law

Question 6

OpenAI CEO 2023-24 drama:‌​‍

Accepted Answer

Sam Altman fired and reinstated — Nov 2023 drama.‌​‍

Answer

Replaced

Answer

Stayed

Answer

Merged

Question 7

Largest producer of tea:‌​‍

Accepted Answer

China — China (India second).‌​‍

Answer

India

Answer

Kenya

Answer

Sri Lanka

Question 8

Willingdon Island in Kochi is:‌​‍

Accepted Answer

An artificial island — Willingdon Island is the largest artificial island in India, created during the construction of Kochi port in 1933.‌​‍

Answer

A natural island

Answer

A volcanic island

Answer

A coral island

Question 9

In the context of NEP 2020, what does the term '360-degree progress card' refer to?

Accepted Answer

B. A holistic evaluation including co-curricular activities and life skills — NEP 2020 proposes a 360-degree progress card to evaluate students holistically, including academic, co-curricular, and life skills. Options A, C, and D are incorrect as they narrow the scope to specific areas or tools.

Answer

A. A report card assessing only academic performance

Answer

C. A digital platform for tracking student attendance

Answer

D. A standardized test for teacher performance

Question 10

Dengue fever is caused by:‌​‍

Accepted Answer

Virus — Dengue is caused by the dengue virus, spread by Aedes mosquitoes.‌​‍

Answer

Not produced by an infective agent

Answer

Bacteria

Answer

Fungi

VFA Mixed Practice Test #786