481. Who discovered that the nucleus is very small and has a positive charge?
(A) Eugene Goldstein
(B) John Dalton
(C) James Chadwick
D) Ernest Rutherford
482. Why are most atoms neutral?
(A) Number of protons is equal to the number of neutrons
(B) Number of electrons is equal to the number of protons
C) Number of electrons is equal to the number of neutrons
(D) None of the above
483. The alkyl halide “CH3CH=CHCl” is named as:
(A) Chloroethene
(B) Chloroethane
C) 1-chloropropene
(D) 2-chloropropene
484. The alkyl halide “CH3CH=CHBr” is named as:
(A) Bromoethene
(B) Bromoethane
(C) 1-bromopropene
D) 2-bromopropene
485. The alkyl halide “CH3C≡CBr” is named as:
(A) Bromoethyne
(B) Bromoethane
C) 1-bromopropyne
(D) 2-bromopropyne
486. Alkyl halides can be classified as primary, secondary, or tertiary based on:
(A) The number of carbon atoms
(B) The type of halogen present
(C) The position of the halogen atom on the carbon chain
D) The degree of substitution of the carbon bonded to the halogen
487. A primary alkyl halide has the halogen atom bonded to a carbon that is:
(A) Bonded to one other carbon atom
(B) Bonded to two other carbon atoms
(C) Bonded to three other carbon atoms
D) Bonded to four other carbon atoms
488. A secondary alkyl halide has the halogen atom bonded to a carbon that is:
(A) Bonded to one other carbon atom
B) Bonded to two other carbon atoms
(C) Bonded to three other carbon atoms
(D) Bonded to four other carbon atoms
489. A tertiary alkyl halide has the halogen atom bonded to a carbon that is:
(A) Bonded to one other carbon atom
(B) Bonded to two other carbon atoms
C) Bonded to three other carbon atoms
(D) Bonded to four other carbon atoms
490. Which of the following is a primary alkyl halide?
(A) CH3CH2Cl
(B) CH3CHClCH3
C) (CH3)3CCl
(D) CH3CH2CH2Cl
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