NEET General 4

Question 1

In a series circuit with resistors of 4 Ω and 6 Ω connected to a 20 V battery, what is the current through the circuit?

Accepted Answer

2 A

Answer

Total resistance = 4 + 6 = 10 Ω; using Ohm's law, I = V/R = 20/10 = 2 A.

Question 2

What is the process by which plants lose water vapor through their leaves?

Accepted Answer

Transpiration

Answer

Transpiration is the loss of water vapor from plant surfaces, primarily through stomata in the leaves.

Question 3

Which of the following has the highest electronegativity?

Accepted Answer

Fluorine

Answer

Fluorine has the highest electronegativity value of 3.98 on the Pauling scale, making it the most electronegative element.

Question 4

Which type of muscle tissue is both striated and involuntary?

Accepted Answer

Cardiac muscle

Answer

Cardiac muscle is striated like skeletal muscle but is involuntary, being controlled by the autonomic nervous system.

Question 5

What is the value of the universal gas constant R?

Accepted Answer

8.314 J/mol·K

Answer

The universal gas constant R = 8.314 J/mol·K, used in the ideal gas law PV = nRT.

NEET - National Eligibility cum Entrance Test Practice Test