Question 231:

• JAMB 1982

A hydrometer is an instrument for measuring the

A. Depth of water in a vessel
B. Relative density of a liquid by the method of flotation
C. Relative dendity of a liquid by finding the apparent loss in weight
D. Relative humidity of the air
E. Atmospheric pressure when the air is humid

Question 232:

• JAMB 1982

The point beyond which a stretched spring does not return to its original length is called the

A. Breaking point
B. Elastic limit
C. Spring constant
D. Elasticity point
E. Release point

Question 233:

• JAMB 1982

The point beyond which a stretched spring does not return to its original length is called the

A. Breaking point
B. Elastic limit
C. Spring constant
D. Elasticity point
E. Release point

Question 234:

• JAMB 1982

A 10g mass placed on the pan of a spring balance causes an extension of 5cm. If a 15g mass is placed on the pan of the same spring balance, the extension is

A. 3.3cm
B. 6.5cm
C. 7.5cm
D. 10.8cm
E. 15.0cm

Question 235:

• JAMB 1982

In a radioactive series
\( ^{235} _{92}L \to ^{235} _{92}M \to ^{231} _{90}N \to ^{231} _{91}\phi \)
The particles emitted are respectively

A. \( \beta , \beta , \alpha \)
B. \( \alpha , \gamma , \beta \)
C. \( \gamma , \alpha , \beta \)
D. \( \alpha , \alpha , \beta \)
E. \( \beta , \alpha , \beta \)