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When baking soda is mixed with lemon juice Bubbles are formed. What gas is evolved in this reaction?

The reaction between baking soda and lemon juice can be given as below. Lemon juice+ Baking soda ⟶ CO2(bubbles)+ Other substances Carbon dioxide... View Article

What is the molarity of 0.2N H₂SO₄?

Molarity = Normality/n−factor For H2SO4, n-factor is 2 Molarity = Normality/2 Molarity =0.2/2 Molarity = 0.1M... View Article

How many bridging oxygen atoms are present in P₄O₁₀?

In P4O10 the number of oxygen atoms attached to each phosphorus atom is 4. 6 bridging oxygen atoms are present in P4O10. In this P4O10, there are... View Article

The correct order of increasing acidic strength is: (a) phenol < ethanol < chloroacetic acid < acetic acid (b) ethanol < phenol < chloroacetic acid < acetic acid (c) ethanol < phenol < acetic acid < chloroacetic acid (d) chloroacetic acid < acetic acid < phenol < ethanol

The correct order of increasing acidic strength is Ethanol < Phenol < Acetic acid < Chloroacetic acid. Phenol is more acidic than... View Article

How to convert Ethanal to Propan-2-ol?

The conversion of ethanol to propan-2-ol is done by using Grignard’s Reagent . So ethanol is treated with ethyl magnesium bromide along... View Article

A white powder is used by doctors to support fractured bones. (a) Write the name and chemical formula of the powder. (b) How is this powder prepared? (c) When this white powder is mixed with water, a hard solid mass is obtained. Write a balanced chemical equation for the change.

(a) The chemical name and formula of the white coloured powder which is used by doctors for supporting fractured bones is: Chemical name -... View Article

An atom has electronic configuration 2, 8, 7. (a) What is the atomic number of this element? (b) To which of the following elements would it be chemically similar? (Atomic numbers are given in parentheses.) (a) N(7) (b) F(9) (c) P(15) (d) Ar(18)

Answer: (a) The number of electrons present in an atom is ⇒ 2+8+7 = 17. Therefore, the atomic number of this element is 17 and the element... View Article

Write the chemical equation of the reaction of ethanoic acid with the following: (1) sodium (2) Sodium Hydroxide (3) ethanol. Write the name of one main product of each reaction.

The chemical equation when Ethanoic acid reacts with Sodium: The main product formed is Sodium Ethanoate. 2CH3COOH + Na → (sodium acetate)... View Article

Aviation fuel for jet aeroplanes consists of purified ____?

Kerosene is used as a fuel in jet aeroplanes . Jet fuel is a colorless, combustible, straight-run petroleum distillate liquid. Its principal uses... View Article

What is the product formed when benzaldehyde and formaldehyde are heated with an aqueous NaOH solution?

A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives the product benzyl alcohol and sodium formate. It is a... View Article

What are interfering radicals?

Interfering radicals are those which interfere in qualitative tests while performing salt analysis. Interfering radicals are oxalate, tartrate,... View Article

The radius of Na+ is 95 pm and that of Cl− ion is 181 pm. Hence, the coordination number of Na+ will be:

The radius of the cation (r+) is 95 pm and the radius f the anion (r−) is 181 pm. radius ratio = r+ / r- = 95 / 181 = 0.52 Since the... View Article

Write down the relationship between the SI and CGS unit of area.

The S.I. unit of work is Joule (J) or Nm. C.G.S unit of work is erg or dyne cm. where 1 N = 105 dyne and 1 m=100 cm ∴ 1 J = 1 Nm = 105... View Article

What is marble cancer?

The acids in the acid rain react with calcium carbonate of marble and degrade it. The phenomenon is called Marble cancer. Acidic rain fall on Taj... View Article

Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

Answer: A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products. The general... View Article

The compound whose 0.1 M solution is basic:- (1) NH₄Cl (2) CH₃COONa (3) Na₂SO₄ (4) CH₃COONH₄

CH3COONa is the compound whose 0.1M solution is basic. A reaction between a strong base and a weak acid leaves us with a basic solution . Sodium... View Article

Which of the following is not an insulator i) Bricks ii) Brass iii) Bamboo iv) Plastic

Plastic and wood are poor conductors of heat. Brass is a type of metal which is alloy of zinc and copper which readily conducts electricity.... View Article

What chemical is present in a fire extinguisher?

Fire Extinguishers contain H2SO4 and NaHCO3. Fire extinguishers contain different chemicals, depending on the application. When the fire... View Article

What is group reagent?

The reagent which is employed in idntifying a gourp of radicals is known as group reagent . Ammonium sulphide is used for testing 5th group... View Article

One gas bleaches the colour of flowers by reduction and another gas by oxidation. The gases are?

The bleaching action of SO2 is due to reduction while the bleaching action of Cl2 is due to oxidation. Thus, the gases are SO2 and Cl2.... View Article

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