Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- Avogadro's number is the number of molecules present in:
- 0.52 g of dibasic acid required 100 mL of 0.1 N NaOH for complete neutralization. The equivalent weight of acid is:
- The maximum number of molecules is present in:
- The numerical value of N/n (where N is number of molecules is n moles of gas) is:
- The normality of 1% (wt./vol.) H_2SO_4 is nearly:
- The gram molecular weight of hydrogen peroxide is 34. What is the unit of gram molecular weight?
- The weight of a substance that displaces 22.4 litre air at NTP is:
- 1.520 g of the hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent weight of metal is
- 510 mg of a liquid on vaporization in Victor meyer's apparatus displaces 67.2 cm^3 of air at (STP). The molecular weight of the...
- 5.6 litre of oxygen at NTP is equivalent to:
- If 0.5 mole of BaCl_2 is mixed with 0.2 mole of Na_3PO_4 the maximum number of mole of Ba_3(PO_4)_2 that can be formed is:
- The number of mole present in 2 litre of 0.5 M NaOH is:
- If 250 mL of a solution contains 2.7 g of H_3PO_4 , the normality of the solution is:
- Vapour density of a volatile substance is 4 ( CH_4 = 1). Its molecular weight would be:
- How many atoms are contained in a mole of Ca(OH)_2 ?
- The mole fraction of oxygen in a mixture of 7 g of nitrogen and 8 g of oxygen is:
- The number of Cl^- and Ca^ 2+ ions in 222 g CaCl_2 are :
- If one mole of ethanol ( C_2H_5OH ) completely burns to carbon dioxide and water, the weight of carbon dioxide formed is about:
- The minimum quantity of H_2S needed to precipitate 63.5 g of Cu^ 2+ will be nearly:
- A gas is found to have the formula (CO) _x. Its VD is 70. The value of x must be:
Other chapters
Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration