11. Lower the pH value _________ will be an acid.
(A) Weaker
(B) Neutral
(C) Stronger
(D) Alkaline
(A) Weaker
(B) Neutral
(C) Stronger
(D) Alkaline
12. Which of the following is an organic compound ?
(A) CO
(B) C2H2
(C) CO2
(D) NaHCO3
(A) CO
(B) C2H2
(C) CO2
(D) NaHCO3
13. Which one of the following is the general formula of alkenes ?
(A) CnH2n
(B) CnH2n-1
(C) CnH2n+1
(D) CnH2n-2
(A) CnH2n
(B) CnH2n-1
(C) CnH2n+1
(D) CnH2n-2
14. The Homologues has the same ?
(A) Density
(B) State
(C) Chemical Properties
(D) Colour
(A) Density
(B) State
(C) Chemical Properties
(D) Colour
15. Carbon atom usually ?
(A) Gains four electron
(B) Forms four covalent bonds
(C) Ionizes
(D) Loses four electrons
(A) Gains four electron
(B) Forms four covalent bonds
(C) Ionizes
(D) Loses four electrons
16. Organic radical with general formula CnH2n+1 is ?
(A) Allyl
(B) Alkyl
(C) Pheny
(D) Benzyl
(A) Allyl
(B) Alkyl
(C) Pheny
(D) Benzyl
17. The next homologue of C8H18 is ?
(A) C9H20
(B) C9H18
(C) C8H16
(D) C7H14
(A) C9H20
(B) C9H18
(C) C8H16
(D) C7H14
18. Methane is the first member of Methane is the first member of ?
(A) Alcohol Series
(B) Carboxylic acids Series
(C) Alkane Series
(D) Alkene Series
(A) Alcohol Series
(B) Carboxylic acids Series
(C) Alkane Series
(D) Alkene Series
19. The compound C3H8 must have ?
(A) An ionic bond
(B) At least one triple bond
(C) All single bonds
(D) At least one double bond
(A) An ionic bond
(B) At least one triple bond
(C) All single bonds
(D) At least one double bond
20. The name of C6H14 is ?
(A) Hexane
(B) Decane
(C) Propane
(D) Heptanes
(A) Hexane
(B) Decane
(C) Propane
(D) Heptanes