18 Questions
What is the function of lenticels in woody plants?
Facilitate gas exchange
Why does red light emerge nearest to the base of a prism when white light passes through it?
Red light has the longest wavelength and deviates the least
Which metal reacts with oxygen to form an oxide that further reacts with moisture and carbon dioxide to form a basic carbonate?
Zn
What is the term for blood plasma without fibrinogen?
Serum
How does swelling of guard cells affect stomatal pores?
Opening of stomatal pores
What is the primary function of chlorophyll in photosynthesis?
Absorbing light energy
Which statement about NaCl is incorrect?
Its pH value is 7, making it a neutral salt.
Why does common salt show hygroscopic nature according to the text?
It contains impurities that give it hygroscopic properties.
What is the nature of an aqueous solution of common salt?
Neutral
Which compound is alkaline in an aqueous medium?
$Na_2CO_3$
Which atmospheric gas absorbs harmful ultraviolet radiation?
Ozone
Why does water vapor cause a reduction in the amount of solar radiation reaching the ground?
It absorbs incoming infrared energy.
What is required for light waves to travel through, based on the text?
Air or another gas
Why does the sun appear white at noon?
All the colors of white light are scattered away
In the given diagram, what does the angle of reflection represent?
0°
Which property of light waves is illustrated in the diagram below?
Light waves are refracted by some materials
In the diagram showing the path of a ray of light through a glass prism, which angles are correctly marked?
$\angle i$ and $\angle r$
What medium is necessary for light waves to travel through, according to the text?
Air or another gas
Test your knowledge on topics like lenticels in plants, light refraction in prisms, metallic oxide formation, and chemical reactions with this quiz containing assertion-reason statements.
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