Science Part 1
science maharashtra board 10th
- What causes the existance of very large number of carbon compound ? Organic compounds mean carbon compounds. Carbon is unique element in the periodic table. It has 4 valence electrons. That means each individ... 1
- Write structural formulae for the following IUPAC names. Condensed structural formulae: IUPAC nameStructural formula a. pentan-2-one mathrmCH₃-CO-CH₂-CH₂-CH₃ b. 2-chlorobutane mathrmCH₃-CHCl-CH₂-CH... 1
- Identify the type of the following reaction of carbon compounds. a. CH₃-CH₂-CH₂-OH → CH₃ -CH₂ -COOH = Oxidation reaction(acidic KMnO₄) b. CH₃ -CH₂ -CH₃ → 3CO₂ + 4H₂O = Combusion reaction c. CH₃ -CH = CH -C... 1
- Write the IUPAC names of the following structural formulae a. CH₃-CH₂-CH₂-CH₃ Answer The number of items in the longest chain :4 Parent Alkane :Butane IUPAC Name :nButane b. CH₃-CHOH-CH₃ Answer The n... 1
- Oxidant Explain the following terms with example Oxidant: The substance which gives oxygen for oxidation is called an oxidising agent or oxidant. The substance which removes hydrogen is cal... 1
- Reduction Explain the following terms with example Reduction: The addition of hydrogen to a substance is called reduction. The removal of oxygen from a substance is called reduction. For exam... 1
- Monomer Explain the following terms with example Monomer: A monomer is a molecule that forms the basic unit for polymers. They may be considered as building blocks from which proteins are m... 1
- Homopolymer Explain the following terms with example Homopolymer: A homopolymer is a polymer formed from same type of monomer units. For examples: Polyvinylchloride (PVC), Polyethylene(-CH2- CH... 1
- Unsaturated hydrocarbon Explain the following terms with example Unsaturated hydrocarbon: An unsaturated hydrocarbon is a hydrocarbon containing at least one double or triple bond. They are chemically more... 1
- Alkane Explain the following terms with example Alkane: Alkane is a saturated hydrocarbon. It is formed, when there is sharing of one electron pair between carbon atoms in a compound. The... 1
- Functional group Explain the following terms with example The compound acquire specific chemical properties due to these hetero atoms or the groups of atoms that contain hetero atoms, irrespective o... 1
- Hetero atom in a carbon compound Hetero atom in a carbon compound: It is a compound formed by replacement of carbon and hydrogen by hetero atom in a compound. A hetero atom... 1
- Explain the following terms with example Covalent bond The chemical bond formed by sharing of two valence electron between the two atoms is called covalent bond. It is also known as molecular bon... 1
- Explain the following terms with example. Structural isomerism The phenomenon in which compounds having different structural formulae have the same molecular formula is called structural isomerism. Butan... 1
- Draw all possible structural formulae of compounds from their molecular formula given below. (i) C3H8 Propane (ii) C4H10 Butane (iii) C3H4 propyne 2
- Draw an electron dot structure of the following molecules. (Without showing the circles) a. Methane b. Ethene, c. Methanol d. Water 1
- Match the pairs. Group ‘A’ Group ‘B’ a. C2 H6 1. Unsaturated hydrocarbon Group 'A' Group 'B' a. C₂H₆ 1. Saturated hydrocarbon b. C₂H₂ 2. Triple bond c. CH₄O 3. Molecular formula of an alcohol d. C₃H₆ 4. Unsaturate... 1
- Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals. Highly reactive metals moderately reactive metals less reactive metals. Ca Fe Au Mg Zn Ag Na Cu Pt Li 1
- Complete the following statement using every given options. During the extraction of aluminium..............
- Zinc oxide is dissolved in dilute hydrochloric acid. 1) This is a double displacement reaction. 2) Zinc Oxide is an inorganic compound with formula ZnO. 3) It is insoluble in water. 4) When Zin... 2
- Electrolysis of alumina is done. The electrolysis of alumina is carried out in a steel tank lined inside with graphite. The graphite lining serves as cathode. Anode is also... 1
- A reaction was brought about between ferric oxide and aluminium. Aluminium is more reactive than iron. Aluminium metal replaces iron from ferric oxide to form aluminium oxide and iron. Chemical Equation: 2... 1
- Write chemical equation for the following events. Iron filings are dropped in aqueous solution of copper sulphate iron is more reactive than copper. it is displacement reaction in which iron displace copper sulphate in the reaction. colour of the solutio... 1
- Write chemical equation for the following events. Aluminium came in contact with air. Aluminum is a very reactive metal. The outer surface of the metal is actually covered by a very thin layer of the oxide which keeps the meta... 1