GEN ED - SCIENCE 2
Quiz by SALINDUNONG REVIEW AND TRAINING CENTER
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- Q1
Why should gasoline be stored in tightly covered narrow-mouthed containers and should be placed away from heat?
I. Toreduce evaporation
II. Topreserve its qualities
III. To decreaseits potential as fire hazard
II and III
I and II
I, II and III
I and III
120s - Q2
Why is it not advisable to repeatedly open the door of a refrigerator?
Repeated opening introduces bacteria into the refrigerator
It leads to wastage in electrical energy
It will loosen the refrigerator’s door
The warm air outside lowers the temperature inside, thus making the refrigerator less efficient
120s - Q3
Which is a destructive fishing method wherein fishes are driven out of a coral reef by pounding the corals with a heavy weight?
Reef fishing
Cyanide fishing
Moro-ami
Coral sentrapping
60s - Q4
What may occur when there is a severe damage to some parts of the brain due to lack of blood supply?
Thrombosis
Cerebro vascular accident
Rheumatic heart disease
Myocardial infraction
60s - Q5
What kind of mirror is used in cars to give the driver a wider area and smaller image of the traffic him/her?
Concave
Plane
Double concave
Convex
60s - Q6
Lanny placed some mothballs inside her cabinet. After a week they were all gone. What happened to the mothballs?
They melted
They condensed
They sublimed
They were dissolved by water in air
60s - Q7
You inherited tallness from your father. Physical traits are transmitted from parents to offspring through _______.
Gametes
Genes
Chromosomes
Alleles
30s - Q8
Which of these statements is false?
Water is heavier than oil
Rain or distilled water (a pure liquid) boils at constant temperature
Kerosene is lighter than water
Fire caused by kerosene can be put out if water is poured on the fire
60s - Q9
How can we prevent developing osteoporosis?
Less exercise to decrease bone density
Adequate intake of calcium and vitamin D
Estrogen replacement therapy
Adequate intake of vitamins A and D
120s - Q10
Which statement correctly differentiates boiling from evaporation?
I. Boilinghappens at a definite temperature while evaporation can occur at any temperature.
II. Boilinghappens when the vapor pressure exerted by the liquid becomes equal to theatmospheric pressure, while evaporation occurs when high energy molecules atthe liquid surface continuously escape to the space above the liquid.
III. Boiling isalways associated with temperature while evaporation is related only topressure.
I only
I and III
I and II
II only
120s - Q11
All of the following are effects of deforestation, except:
Destruction of the ozone layer
Land slides
Global warming
Flash floods
60s - Q12
All of the following problems may arise in the use of sanitary landfill, except:
Flash floods and degradation of soil
Production of methane gas and possible explosion
Pollution of the surrounding soil
Refusal of residents for the construction of sanitary landfill in their area
60s - Q13
Which of the following is heterogeneous?
Rain water
Kerosene
Sea water
Clean air
60s - Q14
Why do we hear thunder some seconds after seeing lightning?
Sound travels 1,331 m/s
Sounds is released later
Light appears brighter in the sky
Light travels faster than sound
60s - Q15
Meteorology is a very important branch of natural science, without which we cannot be informed of forthcoming ______.
Comet
Tropical cyclone
Earthquake
Meteor
60s