## 1. A metal M of equivalent mass E forms an oxide of molecular formula $M_x O_y$. The atomic mass of the metal is given by the correct equation

KEAM 2008 Some Basic Concepts of Chemistry

## 2. Reaction of trans 2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces

JEE Main 2006 Haloalkanes and Haloarenes

## 3. An example of a zero order reaction is

COMEDK 2005 Chemical Kinetics

## 4. Propan-1-ol can be prepared from propene by

AIIMS 2003 Alcohols Phenols and Ethers

## 5. Surface water contains

AFMC 2003 Environmental Chemistry

## 6. The lanthanide contraction is responsible for the fact that

AIPMT 1997 The d-and f-Block Elements

## 7. When methyl-t-butyl ether is formed ?

Odisha JEE 2004 Alcohols Phenols and Ethers

## 8. $RbO_2$ is

Odisha JEE 2008 Chemical Bonding and Molecular Structure

## 9. Magnetic moment of Cr2+ is nearest to

AIIMS 2012 The d-and f-Block Elements

## 10. With reference to the scheme given, which of the given statement(s) about T, U, V and W is/are correct?

IIT JEE 2012 Aldehydes Ketones and Carboxylic Acids

## 11. Chlcrobenzene $\xrightarrow [ X] { Reaction} \, Phenol \, \xrightarrow [ Y] { Reaction}$ Salicylaldehyde. $X$ and $Y$ reactions are respectively

Gujarat CET 2011 Alcohols Phenols and Ethers

## 12. Biuret reagent contains

COMEDK 2011 Aldehydes Ketones and Carboxylic Acids

## 13. Which of the following set of properties belong to PCI$_5$?

J & K CET 2006 Chemical Bonding and Molecular Structure

## 14. Which of the following is the correct statement for PH3?

AIIMS 1999 The p-Block Elements - Part2

## 15. Saturated solution of $KNO_3$ is used to make -alt-bridge- because

IIT JEE 2001 Electrochemistry

## 16. An organic compound (a) reacts with sodium metal (b) On heating with cone. $H_2SO_4$ (a) and (b) are respectively

AFMC 1998 Alcohols Phenols and Ethers

## 17. Assertion : Zinc displaces copper from copper sulphate solution.Reason : The E$^{\circ}$298 K of Zn is -0.76 V and that of Cu is +0.34 V.

AIIMS 1999 Electrochemistry

## 18. Terylene is a condensation polymer of ethylene glycol and

NEET 1999 Polymers

## 19. For the reduction of $NO^-_3$ ion in an aqueous solution $E^\circ$ is + 0.96 V. Values of $E^\circ$ for some metal ions are given below $\, V^{2+}(aq)+2e^- \longrightarrow V;\, \, \, \, \, E^\circ = -1.19\, Vtt$ $\, Fe^{3+}(aq)+3e^- \longrightarrow Fe;\, \, \, \, \, E^\circ = -0.04 V$ $Au^{3+}(aq)+3e^- \longrightarrow Au;\, \, \, \, \, E^\circ = +1.40\, V$ $Hg^{2+}(aq)+2e^- \longrightarrow Hg;\, \, \, \, \, E^\circ = +0.86 V$ The pair(s) of metals that is/are oxidised by $NO^-_3$ in aqueous solution is (are)

IIT JEE 2009 Electrochemistry

## 20. Which of the following order for ionization energy is correct ?

AIPMT 1999 Classification of Elements and Periodicity in Properties

## 21. If p, V, M, T and R are pressure, volume, molar mass, temperature and gas constant respectively, then for an ideal gas, the density is given by

NEET 1989 States of Matter

## 22. The compound whose aqueous solution has the highest $P^H$ is

NEET 1988 Equilibrium

## 23. Assertion: Acetamide on reaction with KOH and bromine gives acetic acid.Reason: Bromine catalyses hydrolysis of acetamide.

AIIMS 2013 Aldehydes Ketones and Carboxylic Acids

## 24. Heart patients can be given

Delhi UMET 2007 Chemistry in Everyday Life

## 25. 720 g water contains, the number of moles

J & K CET 2003 Some Basic Concepts of Chemistry

## 26. In a set of reactions, acetic acid yielded a product D. $CH_3COOH\xrightarrow{SOCL_2} A\xrightarrow [anhy. AICI_3]{Benzene}B\xrightarrow {HCN}C\xrightarrow {HOH}D$ The structure of D would be

Rajasthan PMT 2010 Aldehydes Ketones and Carboxylic Acids

## 27. Enthalpy of formation of HF and HCl are -161 kJ and -92 kJ respectively. Which of the following statements is incorrect ?

COMEDK 2003 Thermodynamics

## 28. The aqueous solution of which of the following salt will have the lowest pH?

AIIMS 1996 Equilibrium

## 29. Copper sulphate dissolves in excess of KCN to give

AIPMT 2006 The d-and f-Block Elements

## 30. A useful member of lanthanides is

AFMC 1997 The d-and f-Block Elements