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Questions and Answers
What is the percentage of alcohol in rectified spirit?
What is the percentage of alcohol in rectified spirit?
Which of the following solids shows anisotropy?
Which of the following solids shows anisotropy?
How many possible isomers can butyl chloride form?
How many possible isomers can butyl chloride form?
In which type of solvent are metallic crystals soluble?
In which type of solvent are metallic crystals soluble?
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What type of balance is used to measure paramagnetic behavior?
What type of balance is used to measure paramagnetic behavior?
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What properties prove that cathode rays are material in nature?
What properties prove that cathode rays are material in nature?
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What is the de Broglie wavelength of an electron moving with a velocity of 2.188 x 10^6 ms^-1 in the first orbit of Bohr's model of hydrogen?
What is the de Broglie wavelength of an electron moving with a velocity of 2.188 x 10^6 ms^-1 in the first orbit of Bohr's model of hydrogen?
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Which of the following is a mineral fiber?
Which of the following is a mineral fiber?
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What is the technique used to separate components of a mixture in solid phase?
What is the technique used to separate components of a mixture in solid phase?
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What is the process of identifying the components of a sample?
What is the process of identifying the components of a sample?
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Why do different components of a mixture have different Rf values?
Why do different components of a mixture have different Rf values?
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What is the process controlled by the Distributive law?
What is the process controlled by the Distributive law?
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What is the safest and most reliable method of drying crystals?
What is the safest and most reliable method of drying crystals?
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What is silica gel and alumina used as?
What is silica gel and alumina used as?
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What is the solution remaining after the formation of crystals called?
What is the solution remaining after the formation of crystals called?
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What is the purpose of shaking two immiscible liquids?
What is the purpose of shaking two immiscible liquids?
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Which enzyme is not involved in the process of fermentation?
Which enzyme is not involved in the process of fermentation?
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What is involved in sp3 hybridization?
What is involved in sp3 hybridization?
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Which compound does not exhibit aldol condensation?
Which compound does not exhibit aldol condensation?
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What is the relative rate of effusion of CO and CO2?
What is the relative rate of effusion of CO and CO2?
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Which of the following is not considered as an intermolecular force between molecules?
Which of the following is not considered as an intermolecular force between molecules?
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What is the common name of propane-1,3-dioic acid?
What is the common name of propane-1,3-dioic acid?
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Ideal gasses have all the following characteristics except?
Ideal gasses have all the following characteristics except?
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What is the main source of organic compounds?
What is the main source of organic compounds?
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What type of hydrocarbons burn with a smoky flame?
What type of hydrocarbons burn with a smoky flame?
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Under what conditions do gases deviate from the ideal behavior?
Under what conditions do gases deviate from the ideal behavior?
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What is the octane number of 2,2,4-trimethyl pentane?
What is the octane number of 2,2,4-trimethyl pentane?
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Which one has the lowest density at room temperature?
Which one has the lowest density at room temperature?
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At constant temperature, the pressure of an ideal gas is doubled, its density becomes?
At constant temperature, the pressure of an ideal gas is doubled, its density becomes?
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In which type of compounds is geometric isomerism usually found?
In which type of compounds is geometric isomerism usually found?
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What is the simplest form of matter?
What is the simplest form of matter?
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What is a characteristic of organic compounds that are essentially nonpolar?
What is a characteristic of organic compounds that are essentially nonpolar?
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What is the balanced chemical equation for the reaction when Be is added to water?
What is the balanced chemical equation for the reaction when Be is added to water?
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Which of the following theories is superior to others?
Which of the following theories is superior to others?
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Which of the following is not a characteristic of a reversible reaction?
Which of the following is not a characteristic of a reversible reaction?
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What is the H+ ion concentration of a solution with pH = 0?
What is the H+ ion concentration of a solution with pH = 0?
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What is the mass in micrograms of 1 mole of electron?
What is the mass in micrograms of 1 mole of electron?
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What is the application of antifreeze in an automobile radiator an example of?
What is the application of antifreeze in an automobile radiator an example of?
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In which type of reaction is the energy of the reactant greater than the energy of the product?
In which type of reaction is the energy of the reactant greater than the energy of the product?
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Which of the following metals can be displaced by all other metals from its solution?
Which of the following metals can be displaced by all other metals from its solution?
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Study Notes
Chemical Properties and Reactions
- The rectified spirit is 95% alcohol.
- Metallic crystals are soluble in polar solvent.
- Paramagnetic behavior of a substance is measured by a Guoy's balance.
- Cathode rays are material in nature and cast shadows, possess momentum, and are negatively charged.
- de Broglie wavelength of an electron is 0.33 nm when moving with a velocity of 2.188 x 10^6 ms^-1 in the first orbit of Bohr's model of hydrogen.
Atomic Structure and Periodic Table
- Atomic number of Mn is 25, and its electronic configuration in the ground state is 1s2 2s2 2p6 3s2 3p6 4s23d5.
- Hunds rule states that electrons fill orbitals with parallel spins until all the orbitals of the same energy are half filled, then they go into sub-shells with anti-parallel spin.
- The electronic configuration of Mn is consistent with Hunds rule.
Chemical Bonding and Molecular Structure
- Butyl chloride has 4 possible isomers.
- The VSEPR theory is superior to others.
- A catalyst changes the direction of reaction in a reversible reaction.
- pH of a solution is related to its H+ ion concentration, with a pH of 0 corresponding to a concentration of 1.
Chemical Reactions and Stoichiometry
- The balanced chemical equation for the reaction of Be with water is Be + 2H2O → Be(OH)2 + H2.
- The reduction of the solution occurs at the Ag electrode in an Al-Ag cell.
- Energy of reactant is greater than energy of product in an endothermic reaction.
- Ag can be displaced by all other metals from its solution.
Organic Chemistry
- The process of fermentation involves all the enzymes except Diastase.
- Regular coiling or zigzagging of polypeptide through hydrogen bonding is its secondary structure.
- Propane-1,3-dioic acid is also known as Malonic acid.
- Industrial materials thermal power stations are coated with epoxy paints.
- Hydrocarbons that burn with smoky flame are called aromatic.
- Octane number of 2,2,4-trimethyl pentane is 100.
- Geometric isomerism is usually found in alkenes.
- Organic compounds that are essentially non-polar and exhibit weak intermolecular forces have low melting points.
Analytical Techniques
- The technique used to separate components of a mixture in solid phase is crystallization.
- Identification of the components of a sample is qualitative analysis.
- Different components of a mixture have different Rf values due to their different distribution coefficients in the solvent.
- Silica gel and alumina are used as stationary phase.
- Sintered glass is a porous material used for filtration.
- The major steps involved in complete quantitative analysis are 4.
Physical Chemistry
- On sp3 hybridization, one s and 3 p-orbitals are involved.
- The relative rate of effusion of CO and CO2 is CO being 1.25 times faster than CO2.
- Ideal gases have all the following characteristics except the absence of intermolecular forces.
- Gases deviate from ideal behavior at high pressure and low temperature.
- The introduction of the Kelvin scale in thermodynamics is according to Charles' law.
- At constant temperature, the pressure of an ideal gas is doubled, its density becomes double.
- Critical temperature for different gases is different and depends upon intermolecular attractions.
- The simplest form of matter is a gas.
- Solid particles only possess vibrational motion.
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Description
Test your knowledge of chemistry with these practice questions covering topics such as chemical composition, properties of materials, and chemical reactions.
