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Q1— Section header —
1.1Indicate whether the following statements are TRUE or FALSE by writing only 'True' or 'False' next to the question number (1.1.1
1.1.10\in the ANSWER BOOK.
1.1.1tom with the same atomic number but different numbers of neutrons are called isotopes
1.1.2An e lectrovalent compound is composed of a symmetrical arrangement of different ly charged ions
1.1.3Hydrogen bonds occur between molecules of hydrogen fluoride
1.1.4Covalent compounds are good electrolytes in solution form
1.1.5A catalyst is a substance that affects the rate of a chemical reaction without itself changing during the reaction.
1.1.6Electrovalent compounds contain bonds that have directional properties
1.1.7Tritium is one of the isotopes of hydrogen used as a tracer for elucidating a wide range of reaction mechanism s.
1.1.8Non polar covalent bonds occur when two atoms exert an equal attraction on the shared electron.
1.1.9Ammonia is liquefiable gas with no smell
1.1.10
1.2Name FIVE example of compound having trigonal planar (5\
1.3Provide suitable structural formula for each of the following:
1.3.1Acetic acid
1.3.2Calcium hydride
1.3.3Zinc monoxide
1.3.4Barium sulphate
1.3.5
1.4The first stage during the formation of sodium chloride is called sublimation Define sublimation energy , provide the balanced reaction and indicate whether the energy is exothermic or endothermic
2.1Given : PF
2.1.1Name this compound (2\
2.1.2Draw a line structure of PF (3\
2.1.3Indicate the ion pairs of electrons of PF (1\
2.1.4Does PF obey the octet rule? Explain your answer (2\
2.2Choose a compound from COLUMN B that matches a description in COLUMN A. Write only the letter (A E\next to the question number
2.2.5\n the ANSWER BOOK. COLUMN A COLUMN B
2.2.5Noble gas Electrovalent bonding Covalent bonding Polar molecule Polar covalent bonding
2.3Given:
2.3.1Complete the reaction above (2\
2.3.2Is a strong or weak base? (1\
2.3.3Write down the K for this expression (3\
2.3.4Indicate the conjugate acid base pair (2\
2.4Write down the balance reaction of carbon monoxide with water (4\ [25]25
3.1Given:
3.1.1Name reactant A and B
3.1.2Provide suitable name for CC
3.1.3
3.2Indicate whether the followin g carbides are IONIC, COVALENT or INTERSTITIAL by writing only ' Ionic', 'Covalent' or 'Interstitial' next to the question number (
3.2.3\n the ANSWER BOOK.
3.2.1Mn
3.2.3
3.3Write down the balanced reaction for the manufactur ing of graphite by ACHESON process (5\
3.4
3.5Name THREE properties of ammonia (3\
3.6What type of oxide is each of the following compounds?
3.6.1BaO
3.6.225
4.1Name FOUR uses of ozone (4\
4.2Draw the resonance of nitrate ion and clearly indicate the limiting structure (4\
4.3Define the term amphoteric and give a suitable example (3\
4.4List FIVE properties of covalent bonding. (5\
4.5Complete the following reaction
4.5.12Fe + 3O (2\
4.5.25CO + I (2\
4.5.3C + 4HNO (3\
4.6List TWO example of permanent hardness (2\ [25] TOTAL: 10025