How is computer useful to us?
Computer is an electronic device that has become an important device in our day to day life. Following are the... View Article
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Why did babur invade india?
Daulat Khan, the most powerful noble of Punjab, who was discontented with Ibrahim Lodhi, invited Babur to invade India. On 21st April 1526, Babur defeated Ibrahim Lodi... View Article
Which is the fifth largest planet in the solar system?
Answer: Earth is the fifth largest planet in the solar system and is the 3rd closest planet to the sun.... View Article
Write down the full form of FICCI.
The full form of FICCI is Federation of Indian Chambers of Commerce & Industry.
The battle of khanwa was certainly more decisive and significant than the first battle of?
The battle of khanwa was certainly more decisive and significant than the first battle of Panipat.
The process of sending and receiving messages is called………………
The process of sending and receiving messages is called Communication. Communication is a two-way means of communicating information in the... View Article
What is plagiarism in computers?
In computers, plagiarism means copying the content or ideas, or words of another source (without informing them) and expressing it... View Article
How do you convert the following: (i) Phenol to Anisole (ii) Ethanol to Propan-2-ol
The conversions are given below: (i) Phenol to Anisole (ii) Ethanol to Propan-2-ol
Aldol condensation does not occur between : (a) two different aldehydes (b) two different ketones (c) an aldehyde and a ketone (d) an aldehyde and an ester.
Answer: (d) an aldehyde and an ester
The hybridisation and geometry of brf3 molecules are: A: sp3d and T shaped B: sp2d2 and tetragonal C: sp3d and bent D: None of these
Answer: A. sp3d and T shaped
Which of the following is not a mineral acid? (A) Hydrochloric acid. (B) citric acid. (C) suphuric acid. (D) Nitric acid.
Answer: (B) Citric acid Citric acid Citric Acid is a weak acid with a chemical formula C6H8O7. It can occur... View Article
Is zinc oxide basic or acidic in nature?
Zinc oxide is an amphoteric oxide that is insoluble in water. It reacts with both acids and bases to form... View Article
How will you convert ethane to ethene organic chemistry?
Ethane when reacted with Chlorine (halogenation) in presence of sunlight gives ethyl chloride. CH3-CH3 + Cl2 —-> CH3-CH2-Cl + HCl... View Article
Acidity of BF₃ can be explained on the basis of which of the following concepts? (a) Arrhenius concept (b) Bronsted Lowry concept (c) Lewis concept (d) Bronsted Lowry as well as Lewis concept
Answer: (c) Lewis concept As per Lewis’s concept, a positively charged or electron-deficient species that can accept a lone pair of electrons... View Article
Question.3: Draw a sketch of Bohr’s model of an atom with three shells.
The Bohr model of the atom was proposed by Neil Bohr in 1915. It came into existence with the modification... View Article
Full form of GOC in organic chemistry
Full form of GOC in organic chemistry is General Organic Chemistry. Learn more: GOC
In which of the following pair, most efficient packing is present? (a) hcp and bcc (b) hcp and ccp (c) bcc and ccp (d) bcc and simple cubic cell
Answer: (b) hcp and ccp Packing efficiency of: hcp = 74% ccp = 74% bcc = 68% Simple cubic =... View Article
Coal gas is mixture of: (a) CH4+H2+CO2+H2S (b) CH4+H2+CO+H2S (c) CH4+H2+CO (d) ethane, propane, butane
Coal gas is a mixture of mainly hydrogen (H2), methane (CH4)and carbon monoxide (CO).Hence, the correct answer is option (c).
Cooking food is an example of chemical change. Explain
The raw ingredients or the vegetables cannot be regained again after cooking. Hence cooking food is an example of chemical... View Article
The size of colloidal particles ranges between: (a) 10-7 – 10-9 (b) 10-9 – 10 -11 (c) 10-5 – 10 -7 (d) 10-2 – 10-3
A colloid is primarily a heterogeneous mixture in which the minute particles of one substance are dispersed in another substance,... View Article
