List of top Chemistry Questions

Identify cross linked polymer from following.
Which of the following statements is NOT correct regarding order of reaction?
Identify the reaction so that carbonyl group of aldehydes and ketones is reduced to methylene group on treatment with Zinc-amalgam and concentrated hydrochloric acid.
Identify the correct decreasing order of stability of complexes formed by divalent metal ions with same ligand.
Calculate the osmotic pressure of 0.03 mole of non electrolyte solute dissolved in $0.1\text{dm}^3$ of water at $300 \text{ K}$. $[\text{R} = 0.082\text{dm}^3 \text{ atm mol}^{-1} \text{ K}^{-1}]$}
Calculate the molar mass of an element if it forms fcc unit cell structure [mass of unit cell $= 1.8 \times 10^{-22} \text{ g}$, $\text{N}_\text{A} = 6.022 \times 10^{23} \text{ mol}^{-1}$]
Which among the following compounds has lowest boiling point?
Identify a molecule having highest number of lone pair of electrons in valence shell of central atom.
If salicylic acid ( $138 \text{ u}$ ) reacts with acetic anhydride ( $102 \text{ u}$ ) to from aspirin ( $180 \text{ u}$ ) calculate % atom economy.
Which of the following equations is correct regarding rate of disappearance of reactant and appearance of product for $\text{N}_{2(\text{g})} + 3\text{H}_{2(\text{g})} \longrightarrow 2\text{NH}_{3(\text{g})}$}
Identify the structural formula of phloroglucinol.
Which from following statements is correct regarding a detergent sodium lauryl sulphate?
What is the mass in grams of $0.25 \text{ mol}$ water?
Which from following is an essential amino acid?
Calculate the concentration of dissolved gas in water at $25^\circ\text{C}$ if partial pressure of gas at same temperature is 0.15 atm . $[\text{K}_\text{H} = 0.15 \text{ moldm}^{-3} \text{atm}^{-1}]$}
Calculate the total number of tetrahedral and octahedral voids formed in 0.6 mol of a compound if it forms hcp structure.
What is the number of unpaired electrons in Ti in +3 state?
Identify thermoplastic polymer from following.
The rate constant for the reaction, $2\text{N}_2\text{O}_{5(\text{g})} \longrightarrow 2\text{N}_2\text{O}_{4(\text{g})} + \text{O}_{2(\text{g})}$ is $4.98 \times 10^{-4} \text{ s}^{-1}$ . What is the order of reaction?
Which of the following is not negatively charged sol?
Which of the following set of elements is present in apatite?
Identify the geometry of $\text{TeF}_4$ molecule from the following.
What is the pH of buffer solution formed by mixing 0.01 M acetic acid and 0.05 M sodium acetate? $(\text{pK}_\text{a} = 4.7447)$
Calculate the energy associated with third orbit of $\text{He}^+$.
Which from following formulae is used to obtain value of $\text{E}^\circ_{\text{cell}}$ for a reaction taking place in Dry cell?