DSSSB Delhi PGT Chemistry Old Paper 2014 on Professional Knowledge
यदि आप DSSSB Delhi द्वारा आयोजित पी जी टी (post Graduate Teacher ) एग्जाम 2022 में appear होने जा रहे हो तो आपको DSSSB post Graduate Teacher Previous Year Question Paper को refer करना चाहिए। ताकि आपको DSSSB PGT Exam Pattern की जानकारी हो सके और आप उस अनुसार परीक्षा की तैयारी कर सके। इसलिए हमारी टीम ने यहाँ DSSSB post Graduate Teacher Exam का पिछले वर्षों में से एक पेपर आपके लिए प्रस्तुत किया है।
| DSSSB – PGT – Chemistry – 2014 – Professional Subject Knowledge | |
| 1. | Chlorobenzene, on reacting with sodamide in liquid ammonia yields aniline as the major product. This conversion is considered to be
(a) Nucleophilic substitution process (b) Elimination-addition process (c) Single electron transfer process (d) Addition-elimination reaction |
| 2. | Amongst the compounds, benzene (I) anisole (II) and chlorobenzene (III), the relative reactivity towards nitronium ion is
(a) II < III (b) I < IIII < II (c) III < II < I (d) IIII < I < II |
| 3. | The pH of a hydrochloric acid solution is 2.0. Sufficient quantity of water is added to it to make the pH of the new solution 5.0. The hydrogen-ion concentration is reduced to
(a) Ten fold (b) Seven fold (c) Hundred fold (d) Thousand fold |
| 4. | In silver chloride, the silver ion is displaced from its lattice points to an interstitial position. Such a defect in the crystal is termed as
(a) Schottky defect (b) F – Center (c) Wadsley defect (d) Frenkel defect |
| 5. | Phosphorus shows an oxidation number of +3 in
(a) Orthophosphorous acid (b) orthophosphoric acid (c) metaphosphoric acid (d) pyrophosphoric acid |
| 6. | If a compound undergoes tetramerization in a given solvent, then its van’t Hoff factor, ‘I’ is
(a) 4.0 (b) 0.125 (c) 2.0 (d) 0.25 |
| 7. | In which of the following processes does the entrophy decrease?
(a) The dissolution of potassium chloride in water (b) The evaporation of benzene (c) When a dozen of glass beakers are taken out of a small bag and dropped on the ground (d) The conversion of gaseous carbon dioxide to dry ice |
| 8. | The equivalent weight of anhydrous sodium carbonate when its solution is titrated against hydrochloric acid in presence of phenolphthalein as indicator, is
(a) 53 (b) 26.5 (c) 213 (d) 106 |
| 9. | When the initial concentration of the reactants is increased by fourfold, the rate becomes eight times its initial value. Then, the order of the reaction is
(a) 1.5 (b) 2.0 (c) 3.5 (d) 2.5 |
| 10. | Peptization is a process of
(a) Precipitation of colloidal particles (b) Purification fo colloids (c) Protection of colloidal solution (d) Dispersing precipitates into colloidal solution |
| Data Collected By – K. Jeyanthi | |
| Published on 12th Oct 2021 | |
| Last Updated on – 17th April 2022 | |
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