Chemistry Nust

Chemistry Nust

1. What is the chemical name of SANDUR?

A . Tetraplumbic oxide 

B . Triplumbic oxide 

C . Triplumbic tetraoxide 

D . Lead dioxide

 2. The velocity of electron in outermost shell is? 

A . Minimum 

B . Intermediate 

C . Maximum 

D . None of these 

3. Which of the following has the highest boiling point?

A . He 

B . Ne 

C . Ar 

D . Kr 

4. Smallest element in the periodic table is?

 A . Uranium 

B . Lithium 

C . Fluorine 

D . Hydrogen

5. Which of the following has the higher bond forces among its molecules?

 A . Hydrogen Fluoride 

B . Neon 

C . Water 

D . Hydrogen

 6. Which one of the following is used in making lozenges?

A . Formaldehyde 

B . Acetone 

C . Acetaldehyde 

D . Methanol

 7. Each carbon in benzene is

 A . sp3 hybridized 

B . sp3 hybridized 

C . sp hybridized 

D . none of these

8. The indicator is a colored _ _____ compound?

A . basic 

B . acidic 

C . organic 

D . inorganic

9. Which of the following doesn’t have an incomplete d orbits? 

A . Ag 

B . Au 

C . Cu 

D . all of these

10. The aromatic compound having the functional group "OH" attached to it is?

 A . Carbolic acid 

B . Phenol 

C . Alcohol 

D . none of these

11. Grignard Reagent shows reaction:

A . Endothermic 

B . Exothermic 

C . Neutral 

D . none of these

12. Group 1A and 11A are known as: 

A . P block elements 

B . S block elements 

C . Alkali Metals 

D . Alkaline Earth Metals

13. Covalent hydrides are: 

A . Gaseous 

B . Solid 

C . Liquids 

D . Both a & c

14. IUPAC name of propionaldehyde is:

 A . Butanal

 B . Propanal 

C . Acetaldehyde 

D . Methanal

15. Which one has fruity smell?

 A . Alcohol 

B . Ethers 

C . Carboxylic Acids 

D . Esters

16. Boiling point of heptanes is:

 A . 98 

B . 160 

C . 200 

D . 140

17. Which one of these are gasses?

A . methane 

B . ethane 

C . propane 

D . all of these

18. Which one of this is toxic?

 A . Nitrous oxide 

B . Nitric oxide 

C . Sulphur dioxide 

D . Carbon dioxide 

 19. Colligative Properties depends upon: 

A . solute 

B . solvent 

C . both a and b 

D . none of these

 20. Oxidation state of sulphur in H2SO4?

 A . +2 

B . +6 

C . +4 

D . -2

 21. If the value of Kc is larger than what will be the effect on reaction?

A . Is at equilibrium 

B . Not at equilibrium 

C . The direction will move in the reverse direction 

D . The reaction moves in the forward direction

22. Which one is metalloid?

A . Si 

B . S 

C . C 

D . O  

23. Which of the following group show halogens?

 A . N to Bi 

B . F to At C . 

C to Sn 

D . H to Cs

 24. Friedel craft’s reaction gives?

A . Benzene 

B . Nitrobenzene 

C . Alkene 

25. Which one is the carbonyl protecting group?

A . Amino Derivatives 

B . Alcohol 

C . Ester 

D . Carboxylic acid

 26. Mass spectrometer is used to find:

 A . Charge to mass ratio of ion 

B . Charge to mass ratio of atom 

C . Mass of ion 

D . Mass of atom

27. Fluorine is reactive due to:

A . Large size 

B . Low electro negativity 

C . Low ionization potential 

D . Low dissociation energy

28. Formula of fructose is: 

A . C5H10O6 

B . C5H10O5 

C . (C6H12O6)n 

D . C6H12O6

29. Borax bead test is used to separate: 

A . Metallic anions 

B . Metallic cations 

C . Nonmetallic cations 

D . Nonmetallic anions

30. If electrons are loosely packed then:

A . Their melting point is high

 B . They act as solid 

C . Their boiling point is high 

D . They conduct electricity

 31. The bond angle of NF3 is: 

A . 120 

B . 107.5

 C . 104 

D .102.5

32. For colligative properties the solution should be: 

A . Dilute 

B . Concentrated 

C . Saturated 

D . Electrolyte

 33. Paraldehyde is formed by: 

A . Formaldehyde 

B . Acetaldehyde

 C . Acetone 

D . none of these 

34. Ketones and aldehydes are reduced in the presence of catalyst: 

A . Pt 

B . Al2O3 

C . R-Mg-X 

D . SOCI2  

35. Oxides of xenon are formed from: 

A . XeF4 

B . XeF6 

C . XeF2 

D . all of these 

36. Transition elements appear colored due to 

A . D-f transition 

B . d-d transition 

C . P-d transition 

D . P-p transition

 37. Out of which of the following alcohols do not react to form alkyl halides? 

A . HCl 

B . SOCl2 

C . PCl3 

D . Br2

38. Formula of bleaching powder is: 

A . Ca(OCl) 

B . Ca(OCl)2 

C . Ca (O2Cl) 

D . Ca(OCl)Cl

39. What is the chief ore of fluorine? 

A . Cryolite 

B . Fluorspar 

C . Dolomite 

D . Both a and b 

  40. Which one of the following is used as an anaesthetic? 

A . Acetone 

B . Ethyl alcohol 

C . Methyl alcohol 

D . Halothane 

41. What is the oxidation state of Mn in K2MnO4? 

A . 12 

B . 8 

C . 6 

D . 7

 42. A solution has Ph of 10. What is the value of [OH-]? 

A . 10-7 

B . 106 

C . 104 

D . 10-4

 43. Which member of 5A group has no stable isotope?

A . Bismuth 

B . Phosphorous 

C . Nitrogen 

D . Arsenic

44. Which group of elements shows greatest electrical conductivity?

 A . Alkali metals 

B . Alkaline earth metals 

C . Halogens 

D . Coinage Metals

 45. Noble gasses have? 

A . High ionization energy 

B . Low ionization energy 

C . Zero ionization energy 

D . none of these

46. The basic character of alkali metal oxides: 

A . Decreases down the group 

B . Remains same 

C . Increases down the group 

D . none of these

47. Half-life of an element is 5 days. If we have 50,000 of its atoms, then how many atoms would be left after 10 days? 

A . 15000 

B . 25000 

C . 50000 

D . none of these

 48. We have two half cells connected with a salt bridge (indicates that it’s a galvanic cell) equation (given) electrons flow from? 

A . Cathode to anode through external circuit 

B . Anode to cathode through external circuit 

C . Anode to cathode through salt bridge 

D . Cathode to anode through salt bridge

 49. When CH2=CH2 reacts with a halogen acid, then what's the product? 

A . Alkyl halide 

B . Alkane 

C . Alkyl 

D . Alkene 

50. Which one of the following does not have allotropes? 

A . N 

B . P 

C . As 

D . Sb