Recently Active Chemistry Questions

*Image* for c=r,q d=p,q hoga na!!!!!!!! ...

*Image* i think b shud be answer but ans. given is different ...

The pink violet colour of KMnO4 is due to: (a) d-d transition (b) p-d transition (c) charge transfer (d) Both (a) & (c) ...

*Image* i m finding only two geometrical isomers! :( ...

Calculate number of geometrical isomers of complex [Cr(NH3)3Cl3] ? ...

Atomic radii of fluorine and neon in Angstrom units are respectively given by A. 0.72,1.60 B. 1.60,1.60 C. 0.72,0.72 D. None of these. If we dont know the exact values,should we go for option A although there is an option lik ...

*Image* Here sequence of X and Y will be 1. X-Cl, Y-Br 2. X-F, Y-Cl 3. X-Cl, Y-F 4. All of these may correct USE UR MAGNIFIERS PLZZZ ...

(NOT MY DOUBT---) *Image* ...

How many sp3 hybridised atom in (SO3)3 solid? ...

Which of the following compounds is expected to be coloured ? A. Ag2SO4 B CuF2 C. MgF2 D. CuCl have doubt b/w B n D ...

If 'I' is the intensity of absorbed light and 'C' is the concentration of AB for the photochemical process, AB + hμ ------>AB*, the rate of formation of AB* is directly proportional to A. C B. I C. I2 D. C.I ...

Stmnt 1: LiCl is predominantly a covalent compound Stmnt 2: Electronegativity difference between Li and Cl is too small (IIT 1998) ...

*Image* Out of following which is most reactive towards electrophilic substitution reaction? USE UR MAGNIFIERS PLZZZZZZZZZ ...

1. Statement-I : Benzoic acid is a weaker acid than formic acid Statement-II : Phenyl group when attached to carbonyl group becomes electron donating. 2. Statement-I : Pb4+ can be reduced rasily to Pb2+ Statement-II : Pb2+ is ...

1..WHICH CONFORMATION OF ETHYLENE GLYCOL IS MOST STABLE; (1)STAGGERED (2)GAUCHE (3)ANTI (4)ECLIPSED ...

hey guys i am doing arihant organic and want to know whether we have to do CHAPTER 19 (CYCLOALKANES) is it is syallabus ????of jee also do we have to do reactions of urea /.???(in chapter derivatives of -COOH )????? ...

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Argon is used in arc welding because of its A. low reactivity with metal B. ability to lower the melting point of the metal C. flammability D. high calorific value ...

CCl4 is resistant to hydrolysis,but SiCl4 is hydrolysed ...

The material used in the solar cell contains A. Cs B. Si C. Sn D. Ti ...

1. S1 : Al(OH)3 is amphoteric in nature. S2 : Al-O and O-H bonds can be broken with equal ease in Al(OH)3. ...

When PbO2 reacts with conc HNO3,the gas evolved is (A). NO2 (B). O2 (C) N2 (D). N2O ...

Q)→The aquatic beings (like fish etc.) feel more better in water in winter time then the summer time.WHY ? ...

Q1) Which of the following complexing agents is used for the exact determination of end point of the titration between boric acid and NaOH? (A) EDTA (B) catechol (C) ethylene diamine (D) terpyridine Q2) How many moles of N2 w ...

1. Account for the followiong a. CO2 is gas, but SiO2 is a solid b. (CCl4 is resistant to hydrolysis, but SiCl4 is hydrolysed 2. What is radius ratio ? What is its significance. ...

1. Which of the following is least alkline *Image* 2. Formic acid when heated with H2SO4 gives (A) (COOH)2 (B) CH3COOH (C) C2H5OH (D) CO 3. Reaction H+ + OH– → H2O is— a) Very slow b) Slow c) fast d) Moderate 4. In DNA ...

Q1. Which shows more donor properties: NF3 or PF3? EXPLAIN. Ans PF3..can't find the reason anywhere.. Q2. Give reasons why cation vacancies in some crystals make them good catalysts. Q3. Explain why: (a) TiCl2 is a high melti ...

d only cation present in a slight acidic sol. are Fe+3, Zn+2 and Cu+2 . d reagent dat when added in excess to this sol. would identify and separate Fe+3 in one step. a. 2 M HCl b. 6 M NH3 c. 6 M NaOH d. H2S gas ...

1. Which one among the following pairs of ions cannot be seperated by H2S in dil HCl ? A. Bi3+,Sn4+ B. Al3+,Hg2+ C. Zn2+,Cu2+ D. Ni2+,Cu2+ (1986) 2. Hydrogen gas will not reduce (A). heated Cupric Oxide (B). heated ferric oxi ...

If an electrolytic solution is diluted to 9 times then its conductance a) Inc. 9 times b) Dec. 9 times c) Remains same d) none ...