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Question 1

Which of the following statements about electricity flowing through a circuit can be correctly derived from Ohm’s law?

Options :

A : Increasing the voltage decreases the current if the resistance remains unchanged.

B : Increasing the current and the resistance decreases the voltage

C : Increasing the current increases the voltage if the resistance is uncharged.

D : Decreasing the resistance increases the current if the voltage remains uncharged

Answer: C

Question 2

8 dogs must line up behind each other in single file to get a treat. How many different ways can the dogs line up?

Options :

A : 8

B : 16

C : 64

D : 320

E : 40320

Answer: A

Question 3

Which of the following violates the conditions of a population under Hardy-Weinberg equilibrium?

Options :

A : Population is large.

B : There are no mutations occurring.

C : Sexual selection

D : There is no immigration or emigration occurring.

E : Random mating

Answer: C

Question 4

What is the pH of 0.001M NaOH solution?

Options :

A : 11

B : 3

C : 13

D : 8

E : 5

Answer: A

Question 5

Which of the following gives the correct order of electromagnetic radiation from the lowest frequency to the highest frequency?

Options :

A : microwaves, UHF radio waves, x-rays, visible light

B : UHF radio waves, microwaves, visible light, x-rays

C : microwaves, visible light, x-rays, UHF radio waves

D : microwaves, x-rays, visible light, UHF radio waves

Answer: B