Haematite is an ore of
  • a)
    Aluminium
  • b)
    Copper
  • c)
    Iron
  • d)
    Tin
Correct answer is option 'C'. Can you explain this answer?

Neha R. P answered  •  2 hours ago
Hematite, also spelled haematite, heavy and relatively hard oxide mineral, ferric oxide (Fe2O3), that constitutes the most important iron ore because of its high iron content (70 percent) and it's abundance.
Hence correct option is C.

Guys periodic table remember karne ka koi tips batao na .?

Akhi Sagi answered  •  3 hours ago
ASAP science ka YouTube me ek periodic table ka song hai usse mast yaad hojaye ga . Meh tho ese he yaad ke . maybe it will for you aswell.

What is 'Brainfreeze?'?

Anita Jagtap answered  •  19 hours ago
A sudden shooting pain in head caused by ingesting very cold food such as ice cream or drink.
a brain freeze regards to eating ice cream or drinking milkshakes or frozen beverages too fast, is a sudden intense pain in the head.
brain freeze is also called ice cream headache -a pain in the tamples and forehead brought on by quickly consuming very cold food and drinks.

The shape of a glass (tumbler) (see Fig.) is usually in the form of
  • a)
    a cone
  • b)
    frustum of a cone
  • c)
    a cylinder
  • d)
    a sphere
Correct answer is option 'B'. Can you explain this answer?

Saxena Aastha answered  •  yesterday
Frustum of cone is the part of cone when it is cut by a plane into two parts. The upper part of cone remains same in shape but the bottom part makes a frustum.
so correct option is B

Elements in a group have similar chemical properties. Give reason?

Adidev Nair answered  •  yesterday
Elements in the same group have similar properties because they have the same number of valence electrons in their outermost shell.
Elements in the same period have different properties because the number of valence electrons in their outermost shells differs.

Which of the following is not a function of transpiration?
  • a)
    Excretion of minerals
  • b)
    Cooling of leaves
  • c)
    Uptake of water
  • d)
    Uptake of minerals
Correct answer is option 'A'. Can you explain this answer?

Saxena Aastha answered  •  yesterday
Transpiration is the process of water loss from leaves in the form of vapour. It is necessary for transporting minerals from the soil to the plant parts, cooling the plant, moving sugars and maintaining turgor pressure. Excretion of minerals does not occur through transpiration. Thus, option A is correct.

What do you mean by exothermic and endothermic reaction ? give with examples.?

Ram Mohith answered  •  yesterday
- Exothermic reactions are the reactions in which heat is released during the process. In these type of reactions reactants are at higher energy as compared to products. Due to this products are more stable than the reactants.

- Endothermic reactions are the reactions in which heat is absorbed during the process. In these type of reactions reactants are at lower energy as compared to products. Due to this products are less stable than the reactants.

Name one plant hormone which is responsible for growth

Neha R. P answered  •  3 days ago
Auxin, commonly abbreviated as IAA, gibberellins and cytokininins all promote plant growth. Abcisic acid and ethylene inhibit plant growth....

Smallest bone of human body. And where it is found.

Neha R. P answered  •  3 days ago
—)The smallest bone in human body is stapes and it is found in the middle ear.

Which hormone help in plant growth?

There are five major types of plant hormones: auxins, cytokinins, gibberellins, ethylene and abscisic acid. Each hormone has a distinct job and for oilseed, pulse and cereal crops, auxins and cytokinins can greatly improve plant vigor, promote growth of roots and shoots and reduce stress.

which plant hormone plays a role in apical dominance in plants?

Auxins promote stem elongation, inhibit growth of lateral buds (maintains apical dominance). They are produced in the stem, buds, and root tips. Example: Indole Acetic Acid (IA). Auxin is a plant hormone produced in the stem tip that promotes cell elongation.

What important role does adrenaline hormone plays in our body and why it is called as stress hormone ?

Adrenaline triggers the body's fight-or-flight response. This reaction causes air passages to dilate to provide the muscles with the oxygen they need to either fight danger or flee. Adrenaline also triggers the blood vessels to contract to re-direct blood toward major muscle groups, including the heart and lungs.

How does our body respond when adrenaline is secreted into the blood?

Our body responds when adrenaline is secreted into the blood

When it reaches the heart, it beats faster to provide more oxygen to our muscles. ... It also raises the blood pressure, and allows more glucose to enter into the blood. All these responses together enable our body to deal with the emergency situations.

How does our body respond when adrenaline is secreted into blood ?

Our body responds when adrenaline is secreted into the blood
When it reaches the heart, it beats faster to provide more oxygen to our muscles. ... It also raises the blood pressure, and allows more glucose to enter into the blood. All these responses together enable our body to deal with the emergency situations.

When Adrenaline secreted in our body?

Epinephrine, more commonly known as adrenaline, is a hormone secreted by the medulla of the adrenal glands. Strong emotions such as fear or anger cause epinephrine to be released into the bloodstream, which causes an increase in heart rate, muscle strength, blood pressure, and sugar metabolism

what is double circulation?

The human circulatory system is a double circulatory system. It has two separate circuits and blood passes through the heart twice: the pulmonary circuit is between the heart and lungs. the systemic circuit is between the heart and the other organs.

What is double circulation explain?

The human circulatory system is a double circulatory system. It has two separate circuits and blood passes through the heart twice: the pulmonary circuit is between the heart and lungs. the systemic circuit is between the heart and the other organs.
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