Chemistry (School & UG)

Q. What functional group is present in both aldehydes and ketones?
  • A. Hydroxyl
  • B. Carbonyl
  • C. Carboxyl
  • D. Amino
Q. What happens to the density of a gas if its temperature is increased at constant pressure?
  • A. Density increases
  • B. Density decreases
  • C. Density remains the same
  • D. Density fluctuates
Q. What happens to the equilibrium of the reaction 2NO2(g) ⇌ N2O4(g) when the temperature is decreased?
  • A. Shift to the left
  • B. Shift to the right
  • C. No change
  • D. Increase the rate of reaction
Q. What happens to the equilibrium position of a reaction when the concentration of a reactant is increased?
  • A. The equilibrium shifts to the right
  • B. The equilibrium shifts to the left
  • C. The equilibrium remains unchanged
  • D. The reaction stops
Q. What happens to the equilibrium position of a reaction when the temperature is increased for an endothermic reaction?
  • A. Shifts to the left
  • B. Shifts to the right
  • C. No change
  • D. Depends on pressure
Q. What happens to the equilibrium position when the concentration of a reactant is increased in a system at equilibrium?
  • A. The equilibrium shifts to the right
  • B. The equilibrium shifts to the left
  • C. No change occurs
  • D. The reaction rate increases
Q. What happens to the equilibrium position when the concentration of a reactant is increased?
  • A. The equilibrium shifts to the right
  • B. The equilibrium shifts to the left
  • C. No change occurs
  • D. The reaction stops
Q. What happens to the equilibrium position when the concentration of a reactant is increased in a reversible reaction?
  • A. The equilibrium shifts to the right
  • B. The equilibrium shifts to the left
  • C. The equilibrium remains unchanged
  • D. The reaction stops
Q. What happens to the freezing point of a solvent when a solute is added?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It fluctuates
Q. What happens to the position of equilibrium when the concentration of a reactant is increased?
  • A. The equilibrium shifts to the right
  • B. The equilibrium shifts to the left
  • C. No change occurs
  • D. The reaction stops
Q. What happens to the pressure of a real gas as the temperature decreases at constant volume?
  • A. Pressure increases
  • B. Pressure decreases
  • C. Pressure remains constant
  • D. Pressure fluctuates
Q. What happens to the reaction rate if the temperature is increased by 20°C for most reactions?
  • A. Rate doubles
  • B. Rate quadruples
  • C. Rate decreases
  • D. Rate remains the same
Q. What happens to the vapor pressure of a liquid as temperature increases?
  • A. It decreases
  • B. It remains constant
  • C. It increases
  • D. It becomes zero
Q. What happens to the volume of a gas when it is compressed at constant temperature?
  • A. Volume increases
  • B. Volume decreases
  • C. Volume remains the same
  • D. Volume fluctuates
Q. What happens to the volume of a gas when the pressure is doubled at constant temperature?
  • A. Volume doubles
  • B. Volume halves
  • C. Volume remains constant
  • D. Volume quadruples
Q. What happens to the volume of a gas when the temperature increases at constant pressure?
  • A. Volume decreases
  • B. Volume increases
  • C. Volume remains constant
  • D. Volume fluctuates
Q. What happens to the volume of a gas when the temperature is increased at constant pressure?
  • A. It decreases
  • B. It remains the same
  • C. It increases
  • D. It becomes zero
Q. What indicator is commonly used in a strong acid-strong base titration?
  • A. Phenolphthalein
  • B. Methyl orange
  • C. Bromothymol blue
  • D. Litmus
Q. What is a back titration?
  • A. Titration of a solution with a known concentration
  • B. Titration where the endpoint is determined by color change
  • C. Titration of an excess reagent followed by titration of the excess
  • D. Titration that uses a solid reagent
Q. What is a common application of complexometric titration?
  • A. Determining the concentration of metals in solution
  • B. Measuring the acidity of a solution
  • C. Analyzing the purity of organic compounds
  • D. Identifying unknown substances
Q. What is a common application of IR spectroscopy in environmental analysis?
  • A. Measuring pH levels
  • B. Identifying pollutants
  • C. Determining molecular weight
  • D. Separating mixtures
Q. What is a common application of titration in the food industry?
  • A. Measuring the viscosity of oils
  • B. Determining the acidity of fruit juices
  • C. Analyzing the color of beverages
  • D. Separating food additives
Q. What is a common mistake made during titration?
  • A. Using a burette for titrant delivery
  • B. Not swirling the flask during titration
  • C. Using a pH meter for endpoint detection
  • D. Adding titrant too slowly
Q. What is a common mistake to avoid during a titration?
  • A. Using a burette for accurate measurement
  • B. Adding titrant too quickly
  • C. Using a proper indicator
  • D. Recording the final volume accurately
Q. What is a common mistake to avoid during titration?
  • A. Adding titrant too quickly
  • B. Using a clean burette
  • C. Measuring the volume accurately
  • D. Using the correct indicator
Q. What is a common mistake when performing a titration?
  • A. Not swirling the flask
  • B. Using too much titrant
  • C. Not recording the initial volume
  • D. All of the above
Q. What is a common use of UV-Vis spectroscopy in environmental analysis?
  • A. Measuring soil pH
  • B. Detecting heavy metals
  • C. Analyzing water quality
  • D. Identifying microorganisms
Q. What is a primary standard in titration?
  • A. A solution of known concentration
  • B. A pure substance used to prepare a solution
  • C. An indicator used in titration
  • D. A method of measuring pH
Q. What is a typical application of UV-Vis spectroscopy in food analysis?
  • A. Measuring pH
  • B. Determining fat content
  • C. Analyzing color and pigments
  • D. Identifying microbial contamination
Q. What is Faraday's law of electrolysis?
  • A. Mass is conserved
  • B. Charge is conserved
  • C. Current is proportional to voltage
  • D. The amount of substance deposited is proportional to the charge passed
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