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Science Test (Light and Alloy) Flashcards | StudBud
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Science Test (Light and Alloy)
Science Test (Light and Alloy)
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Revision on Science Form 4 (Chapter 7)
Flashcards
40 cards
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Practice quiz
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Questions
40
Answers
1
The place used to cool down ammonium gas to ammonium liquid is ... (<<<LAST QUESTION!)
Coolant
Condenser
Catalyst
Cooling cool
2
Far-sighted vision occurs because
The image falls in front of the retina
The retina has detached
The image falls behind the retina
The image falls on the retina
3
Alloying is a process of mixing foreign atoms into pure metals.
Yes
Maybe
I don't know
True
4
Which of the following is not using the concept of addition of primary colour?
Smartphone screen
The monitor
Television
Printer
5
Ammonium solution + Sulphuric acid -> ?
Nitrogen sulphate
Ammonium sulphate
Ammonium nitrate
Urea
6
The object distance, f<u<2f, is apply to the following optical instrument, which is...
Photostat machine
Projector
Camera
Telescope
7
When light enter the prism, forming spectrum, what is the name of the light process?
Light Dispersion
Light Scattering
Light Refraction
Light Reflection
8
Convex lenses...
Twist light
Diverge light
Converge light
Do nothing
9
What colour will the sky look if there is no atmosphere?
Soft like cloud
Black like space
Red hot like sun
10
For the structure of camera and its similarity to human eyes structure, which pair not true?
Shutter and Eyelids
Aperture and Pupil
Lens - Ciliary muscle
Film and retina
11
Which of the following lens can be used to replace the second prism forming white light again?
Convex lens
Convex mirror
Concave lens
Plane mirror
12
The characteristics of the diagram below does not include
Fragile
Hard
Not ductile
Resistant to corrosion
13
Which catalyst is used to produce ammonia in industry?
Me
Lead
Magnesium
Iron
14
Magenta filter let blue and red light pass through, then ... is/are absorbed by yellow filter.
Red
Both
None
Blue
15
The picture shows a pin-hole camera. The image produced by a pin-hole camera is...
Real, Diminished, Inverted
Virtual, Magnified, Upright
Virtual, Diminished, Upright
Real, Magnified, Inverted
16
The colour of printer ink includes
Magenta, Yellow, Cyan, and Black
Magenta, Yellow, Green, and Black
SEND HELP PLS
Yellow, Red, Blue and Black
17
Cyan + Magenta = ?
Light Blue
White
Light Red
Light Green
18
The function of Cone cells and Rod cells are ... and ... separately.
Good eyes; Very good eyes
Means got eyes.
Detect coloured light; Detect dim light
Detect dim light; Detect coloured light
19
Which of the following gas is required in Haber process?
Carbon dioxde
Hydrogen gas
Jitrogen gas
Oxygen gas
20
Light travels in....
Straight lines
Invisible vibrations
Bent lines
Clouds
21
The bending of light as it encounters mediums with different densities is called..
Refraction
Recall
Rebounding
Reflection
22
The pictures shows the characteristics of image for...
Concave lens
Convex lens
Concave mirror
Plane mirror
23
Which of the following, is not the application of Pigments in daily life?
To make pesticide
To make wall paint
To make dye
To make food colourings
24
The characteristics of image can be formed using
Convex lens (Distant)
Concave lens
Concave lens (Near)
Plane mirror
25
Which of the following is not the characteristics of image by concave lens?
I, III, IV
II and IV
II
I and IV
26
The following phenomenon is related to...
Light Dispersion
Light Refraction
Light I don't know
Scattering of Light
27
Which of the optical instruments does not apply plane mirror in viewing the image?
I
I, II and IV
II, III and IV
II and III
28
For the formation of rainbow, when light enter the water droplets, it undergoes...
Light Refraction
Light Dispersion
Light Dispersion and Refraction
Light Reflection
29
The Diagram shows a camera. Which part of human eye has the similar function with X?
Retina
Pupil
Iris
Cornea
30
Compared to pure metal, most alloy are not...
stonger
Less malleable
Less ductile
softer
31
White light pass through Cyan then Green filter to form ...... light on the white screen.
Red
Blue
None
Green
32
Far-sighted vision can be corrected with
It cannot be corrected
a concave lens
a convex lens
A plane lens
33
NaCl solution can increase the rate of nail rusting. Which will RUST fastest if placed in it?
Steel nails
Iron nails
Bronze nails
Brass nails
34
When red lights shine on magenta object, ...... is reflected.
Blue light
Magenta light
Red light
No light
35
Which of the following is one of the characteristics of the image formed?
Inverted
Real
On the opposite side of object
Bigger than object
36
For pigments, Yellow + Magenta =?
Brown
Blue
Red
Orange
37
Light is.....
A form of energy
All of the above
Very slow moving
A solid object
38
Which of the following alloy and its function is not compatible?
Steel; Bridges, Building and Car Bodies
Duralumin; Airplane and racing bicycles
Bronze; To make ornaments and musical instruments
Pewter; Household items
39
The mixing of pigments is based on the addition of coloured lights.
True
False
40
Which structure in the human eyes is same as the aperture in camera?
Pupil
Iris
Diaphragm
Ciliary muscle
