Archives

How many d electrons are present in Cr⁺² ion?

The d orbital Cr+2 ion contains 4 electrons.... View Article

Oxidation is a process which involves

Oxidation is a process that involves: a) addition of oxygen b) removal of oxygen c) addition of hydrogen d) removal of hydrogen Answer: a)... View Article

What happens when copper nitrate undergoes heating?

When copper nitrate or Cu(NO3)2 undergoes heating, a metal oxide, nitrite and oxygen will be the results. 2Cu(NO3)2 → 2CuO + 4NO2 + O2 However,... View Article

Give two uses of quick lime.

Uses of quick lime are:It is used in the manufacturing of cement, paper, and high-grade steel.It is the cheapest alkali available which is an... View Article

Name the chemical formula of sodium amalgam.

The chemical formula of Sodium amalgam is Na(Hg). It is an alloy of mercury and sodium.... View Article

Write chemical equation to represent the action of dilute hydrochloric acid on bleaching powder.

Bleaching Powder is Calcium Oxychloride and its chemical formula is CaOCl2. The chemical equation to represent the action of dilute hydrochloric... View Article

Which one of the following is a metal?

(A) Carbon (B) Nitrogen (C) Sodium (D) OxygenCorrect option: (C) Sodium.Among the given options, Sodium(Na) is a metal.... View Article

Consider the following statements: (a) Both acids and bases change colour of all indicators. (b) If an indicator gives a colour change with an acid, it does not give a change with a base. (c) If an indicator changes colour with a base, it does not change colour with an acid. (d) Change of colour in an acid and a base depends on the type of the indicator. Which of these statements are correct? (i) All four (ii) a and d (iii) b, c and d (iv) only d

Answer: (iv) Only (d) is correct The change of colour in acid and base depends on the type of indicator. A substance that can be added to the... View Article

Differences between Atomic Orbital and Molecular Orbital.

Atomic Orbital Molecular Orbital - It is the region having the highest probability of finding an electron in an atom - It is the... View Article

Draw a neat labelled diagram of electrolysis of water.

Here's a neat labelled diagram to show the electrolysis of water.... View Article

The drain cleaner drainex contains small bits of aluminum which react with caustic soda to

The drain cleaner drainex contains small bits of aluminium which react with caustic soda to produce hydrogen.... View Article

Name the methods of food protection.

The most commonly followed food protection methods are chemical method, sugar, heat and cold methods, smoking, canning, sterilization,... View Article

Define girth of the stem.

The thickness or width of the stem is called the girth of the stem. Also, the girth of the stem is increased due to Lateral meristem.... View Article

What is lymph? Write its function.

The fluid present in the lymphatic system is called lymph. Lymph is a colourless fluid containing specialised lymphocytes which are responsible... View Article

Natural system of classification is given by

(a) Carolus Linnaeus(b) George Bentham and Joseph Dalton Hooker(c) Hutchinson(d) Ernest HaeckelCorrect option: (b) George Bentham and Joseph... View Article

Give an example of threshing.

Threshing is the process that is used to separate the grain from stalks etc. In this process, the stalks are beaten to free the grain seeds.... View Article

Example of complex tissue.

Xylem and phloem are the examples of complex tissues. These are heterogenous in nature.... View Article

Name the stored food of animal.

The stored food of animal is called Glycogen. That means, in animals, the stored food reserve is in the form of Glycogen, energy or fat.... View Article

Test tube baby technique is called

(a) in vivo fertilization(b) in situ fertilization(c) in vitro fertilization(d) artificial inseminationCorrect option: (c) in vitro... View Article

Where are vesicles are formed in Golgi apparatus?

The Golgi apparatus principally performs the function of packaging materials, to be delivered either to the intracellular targets or secreted... View Article

M	T	W	T	F	S	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30