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Hyperconjugation involves overlap of which of the following orbitals a) σ−σ b) σ−p c) p−p d) π−π

Option b) σ−p... View Article

Convert Propene to propan-1-ol

Properne to Take propene and add hydrogen bromide in the presence of peroxide. Add an aqueous solution of potassium hydroxide... View Article

Which of the following pairs are isotopes a) Ice and steam b) Hydrogen and Deuterium c) Nitric oxide and nitrogen dioxide d) Oxygen and ozone

Option b) Hydrogen and Deuterium... View Article

Which metals does not react with dilute hydrochloric acid

Metals that do not react with dilute hydrochloric acid are copper, silver, gold and mercury.... View Article

A reaction is 50 complete in 2 hours and 75 complete in 4 hours the order of reaction is? a)0 b)1 c)2 d)3

Option b) 1... View Article

When coal burns in air ……….. gas is mainly produced (a)SO2 (b)NO2 (c)CO (d)CO2

Option (d)CO2... View Article

Air is a mixture but not a compound. Explain why

Air is a mixture, but not a compound because air can be separated into different components such oxygen, nitrogen etc through the process of... View Article

Tomato juice is acidic or basic

Tomato juice is acidic in nature.... View Article

Which of the following is not a chemical change?

Which of the following is not a chemical change? burning of paper rusting of iron digestion of food precipitation of rain and snow The... View Article

NaHCO3 on heating gives

The following is the reaction that takes place when NaHCO<sub>3</sub> is heated:... View Article

What do you understand by an alkali. Give two examples of weak alkalis

An alkali is a basic hydroxide which when dissolved in water, produces hydroxyl ions (OH-) as the only negatively charged ions. Examples of weak... View Article

Lactose is composed of (1) Glucose + Galactose (2) Glucose + Fructose (3)Glucose + Glucose (4) Glucose + mannose

Answer: (1) Glucose + Galactose Lactose is a disaccharide that is commonly known as milk sugar. It is composed of galactose and glucose... View Article

What is the taste of baking soda

Baking soda tastes bitter.... View Article

Which gives co2 on heating slaked lime or limestone?

Limestone on heating gives calcium oxide and carbon dioxide. CaCO3--->CaO+CO2... View Article

What is solute and solvent in air

In the air, Nitrogen is the solvent (majority component), and oxygen (minority component) is the solute.... View Article

Is lime water an acidic or basic solution?

Lime water has a pH of 12.4. Hence, it is basic in nature.... View Article

Draw the structure of benzene and cyclohexane

Benzene is an organic chemical compound with the molecular formula C6H6. It is a colourless liquid with a sweet odour. The structure of benzene... View Article

Element showing spontaneous combustion is (a). phosphorous (p) b. calcium (ca) c. copper (cu) d. lithium (li)

Option d. lithium (li)... View Article

Which of the following gases protects us from harmful sun (a) Carbon dioxide (b) Nitrogen (c) Ozone (d) Oxygen

Option (c) Ozone.... View Article

The number of atoms in hcp unit cell is a) 4 b) 6 c) 12 d) 12

Option b) 6.... 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