F4-Quiz-1 (3/Sept/2021)

The following are steps in the preparation of a standard solution through dilution method.

P- Calculate the volume of solution to be diluted.

Q- Add distilled water until it reaches the calibration mark.

R- Use a pipette to draw up the needed volume of the stock solution.

S - Transfer the solution into a volumetric flask.

Choose the correct sequence of the steps.

• A. R, Q, R, S

• B. P, R, Q, S

• C. P, R, S, Q

• D. R, S, P, Q

The sting of an ant contains methanoic acid.

Which of the following substances is the most suitable to be applied to treat ant sting?

• A. Sodium hydroxide

• B. Toothpaste

• C. Ethanol

• D. Cooking oil

Which of the following pairs of compounds will react in a neutralization reaction?

I. Hydrochloric acid and potassium hydroxide

II. Sulphuric acid and solid copper (II) oxide

III. Nitric acid and solid calcium carbonate

IV. Hydrochloric acid and zinc metal

• A. I and II only

• B. III and IV only

• C. I, III and IV only

• D. I, II, III and IV

Diagram 2 shows one end of a slinky spring being moved back and forth to produce a transverse wave.

What is the wavelength of the wave?

• A. 5 cm

• B. 10 cm

• C. 15 cm

• D. 20 cm

What is the physical quantity transferred in wave motion from one point to another?

• A. Weight

• B. Wavelength

• C. Speed

• D. Energy

The diagram below shows a water wave produced by a spherical dipper.

The velocity of the wave formed by the dipper is 3.5 ms^-1.

What is the frequency of the oscillation of the dipper?

• A. 5.83 Hz

• B. 11.67 Hz

• C. 7.28 Hz

• D. 13.15 Hz

The diagram below shows a load tied to a spring which oscillates vertically in the water.

Which of the following displacement-time graphs shows the oscillation of the load?

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