Online NAT IE Pre Engineering Chemistry Test Preparation for Pakistani Students

NAT I Engineering Chemistry

Sr. #	Questions	Answers Choice
1	If the solvent is inflammable for heating purpose we use	Ice bath Water bath Wire gauze Thermostat
2	Which one is not usually used for the crystallization	Acetone Acetic acid Sulphuric acid Chloroform
3	Which one is the property of an ideal solvent	Should be expensive It should react chemically with the solute Impurities should crystallize along with the solute Should be safe to use
4	Gooch crucible used to filter the solution of	H<sub>2</sub>SO<sub>4</sub> HCI KMnO<sub>4</sub> Both B & C
5	Gooch crucible is used for the filtration of precipitates having	High solubility High concentration High ignition temperature Low temperature
6	By using the fluted filter paper rate of filtration is	Increased Decreased Filtration is constant Having no effect
7	During the folding of filter paper the apex form angle of about	80<sup>o</sup> 60<sup>o</sup> 180<sup>o</sup> 90<sup>o</sup>
8	The pore size of the filter paper depends upon	Nature of the medium Temperature of the medium Size of the particles Mass of the particles
9	Which of the following process is used to separate insoluble particles from liquids?	Separation Filtration Crystallization Condensation
10	Which of the following is directly related to Qualitative analysis?	Identification Separation Measurement Calculation