Unit17 Group5A p-block elements qns

Unit17 Group5A p-block elements qns - 1 UNIT 17 Groups OR...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 QUEST TUTORIALS Head Office : E-16/289, Sector-8, Rohini, New Delhi, Ph. 65395439 UNIT 17 Groups OR VA (p – block) 1. The outer-shell electronic configuration of Bi is (a) 3S 2 3p 3 (b) 4S 2 4p 3 (c) 5S 2 3p 3 (d) 6S 2 6p 3 2. Nitrogen gas is commercially obtained from (a) liquid NH 3 (b) Liquid air (c) HNO 3 (d) nitrogen fixing bacteria ? 3. Which of the following reaction does not yield N 2 Gas ? (a) NH 4 NO 2 → Δ (b) (NH 4 ) 2 Cr 2 O 7 → Δ (c) NH 3 (excess) + Cl 2 (d) NH 4 NO 2 → Δ 4. Electric furance is used in the prepatation of the following except: (a) SiC (b) CaC 2 (c) P 4 (d) B 4 C 5. The correct formula for tratar emetic is (a) COOSbO CH | COOK CH 2 2 (b) COOSbO CH | CHOHCOOH 2 (c) HCOOK CHO | CHOHCOOH (d) HCOOSbO CHO | CHOHCOOK 6. Arsenic poisoning is detected by (a) Doctor’s solution (b) Marsh test (c) Na 2 SnO 2 solution (d) H 2 S 7. Black MnO 2 is oxidised into purple NaMnO 4 by reaction with (a) SnCl 2 + HCl (b) Pb 3 O 4 + HNO 3 (c) NaBiO 3 +H 2 SO 4 (d) HNO 3 +Hcl 8. When an oxide M 2 O 3 is oxidised to M 2 O 5 its eq. wt. is (a) M.W (b) 2 MW (c) 4 MW (d) 8 MW 9. HNO 3 is prepared commercially by (a) Catalytic Oxidation of NH 3 (b) direct combination of N 2 and O 2 (c) heating KNO 3 with conc. H 2 SO 4 (d) none of these 10. when copper reacts with conc. HNO 3 the gas produced is (a) NO 2 (b) NO (c) N 2 O (d) NH 3 11. when copper reacts with dilute HNO 3 , the gas produced is (a) NO 2 (b) NO (c) N 2 O (d) NH 3 12. When Zn reacts with dilute HNO 3 , the gas produced is (a) NO 2 (b) NO (c) N 2 O (d) NH 3 13. Gold dissolves in aqua regia to give (a) AuCl (b) AuCl 3 (c) HAuCl 4 (d) None of these 14. Which of the following metals is not rendered passive by conc. HNO 3 ? (a) Fe (b) Al (c) Cr (d) V 15. NH 3 is prepared on a large scale by (a) Haber’s process
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 QUEST TUTORIALS Head Office : E-16/289, Sector-8, Rohini, New Delhi, Ph. 65395439 (b) Cynamide process (c) Serpeck’s process (d) heating NH 4 Cl with slaked line 16. the heating of microcosmic salt gives a bead of (a) Na 3 PO 4 (b) NaPO 3 (c) (NaPO 3 ) 6 (d) Na 4 P 2 O 7 17. The oxidation state of Nitrogen in NH 4 NO 2 are (a) –3, +3 (b) –3. +5 (c) –1, 5 (d) +1, –1/3 18. In hydrazoic acid, the oxidations state of N is (a) +1 (b) –1 (c) –1/3 (d) +1/3 19. The change in oxidation state when Nh 2 OH is oxidised to N 2 O is (a) –1 to +1 (b) –2 to +2 (c) +1 to -1 (d) –3 to +1 20. The most commonly used nitrogen fertilizeer is (a) CAN (b) (NH 4 ) 2 SO 4 (c) basic calcium nitrite (d) Urea 21. When water is added to a solution of salt in Hcl, a white precipitate is formed which disolves to give a clear solution on addition of afew drops of conc. Hcl. When H 2 S is passed though the solution, an orange ppt, is formed. the salt could (a) BiCl 3 (b) SbCl 3 (c) AsCl 3 (d) P Cl 3 22. An ice-cold solution of NaNO 2 H Cl gives HNO 2 which (a) can decolorize acidified KMnO 4
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/05/2011 for the course CHEM 1201 taught by Professor Darcy during the Spring '11 term at St. Mary NE.

Page1 / 6

Unit17 Group5A p-block elements qns - 1 UNIT 17 Groups OR...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online