MCAT ECAT Chemistry Paper
Our collections of Multiple choice questions and answers focuses Based on questions appearing in the Latest MDCAT and ECAT papers, most of the questions are chosen from most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate in Chemistry comprehensively.
2. In the van der Waals equation (P + n2a / v2) (v – nb) = nRT which of the following statement is not true?
N2a/v correct for the intermolecular forces.
Nb correct for the volume occupied by gas molecules.
At high densities the equation reduces to the ideal gas law
All of the above statements are correct.
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
3. Methyl alcohol is not used as
A solvent
An anti freezing agent
A substitute for petrol
For denaturing of ethyl alcohol
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
4. The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent.
Alkaline aquenous iodine
Aqueous bromine
Fehling solution
Aqueous NaOH
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
5. Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse?
20cm3/min
40cm3/min
160cm3/min
2.5cm3/min
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
6. When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show?
Phenol is unsaturated
2-bromophenol is insoluble in water
A hydroxy group makes the benzene ring more susceptible to electrophilic attack
Acid-base reaction
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
7. As a substance moves from a solid to a liquid all of the following changes occur except:
Molecules become more disordered.
K.E of the molecules decreases
Intermolecular forces become weaker.
Molecules move more frequently.
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
8. If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at
0?C
273.16K
?273.16 K
?273.16?C
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
9. The rectified spirit is
12% alcohol
90% alcohol
95% alcohol
100% alcohol
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
10. Benzene is a good solvent for
Fats
Resins
Iodine
All the above
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
11. Which of the following solids show anisotropy
Plastic
Glass
Rubber
None of the above
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
12. Which of the following element doesnot show allotropy
Carbon
Arsenic
Nitrogen
Sulphur
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
13. Butyl chloride gives possible isomers.
2
3
4
5
14. Purines and pyrimidines are
Enzymes
Nitrogenous bases
Carbohydrates
Lipids
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
15. Metallic crystals are soluble in
Polar solvent
Non polar solvent
Fused metal
None
Answer & Solution
No Solution for this Answer..! Report or Discus this Question