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Answer:
1 Sclerenchyma
2 oxygen I guess
3 mixture of alcohol and iodine
6 due to inertia of rest of dust particles
8 scattering of light by particals. properties of colloids are they cannot be filtered and they appear to be homogeneous but are heterogeneous
9 ice have air trapped in it when it freezes these particals are called fine structures. they lowers its density as compared to water
Answer:
Explanation:
1. Sclerenchyma tissue makes up the husk of coconut.
2. the most abundant element present in earth atmosphere is NITROGEN. Though oxygen is the most essential gas it is the nitrogen which has higher position in the earth atmosphere. Nitrogen makes around 78.084% of total elements of earth. This means it is four times abundant than oxygen or hydrogen.
3. Tincture of iodine, iodine tincture, or weak iodine solution is an antiseptic. It is usually 2–7% elemental iodine, along with potassium iodide or sodium iodide, dissolved in a mixture of ethanol and water. Tincture solutions are characterized by the presence of alcohol.
Formula: I2
4. Intercropping is a multiple cropping practice involving growing two or more crops in proximity. The most common goal of intercropping is to produce a greater yield on a given piece of land by making use of resources or ecological processes that would otherwise not be utilized by a single crop.
6. Dust came out when a carpet is beaten with stick because of inertia. => Dust particles were at rest on the carpet. However when you beat the carpet, you are forcing the dust to move along with the carpet. Due to the dust having inertia, it doesn't move, or rather, it resists motion.
8. The Tyndall effect is light scattering by particles in a colloid or in a very fine suspension.
Also known as Willis–Tyndall scattering
properties of colloid
Stability
Filterability
9. Water is different because of hydrogen bonding.
Ice floats because it is about 9% less dense than liquid water.
In other words, ice takes up about 9% more space than water, so a liter of ice weighs less than a liter water.
The heavier water displaces the lighter ice, so ice floats to the top.