Câu 1: Dãy chất gồm toàn hiđrocacbon là: a. CH 4 ; CH 3 Cl; CH 3 Br; C 5 H 12 b. C 4 H 8 ; CCl 4 ; C 2 H 6 ; C 2 H 2 c. C 2 H 2 ; C 4 H 8 ; C 5 H 10 ; CH 4 d. CH 3 Cl; CCl 4 ; C 2 H 6 O; C 3 H 4 Câu 2: Hợp chất nào sau đây có hàm lượng cacbon ít nhất: a. C 2 H 4 b. CH 4 c. C 2 H 6 d. C 2 H 2 Câu 3: Xác định CTPT của hợp chất hữu cơ khi biết hợp chất gồm: 75%C, 25%H. a. C 2 H 4 b. C 2 H 2 c. CH 4 d. C 6 H 6 Câu 4: Sản phẩm chủ yếu của một hợp chất hữu cơ khi cháy là A. khí nitơ và hơi nước. B. khí cacbonic và khí hiđro. C. khí cacbonic và cacbon. D. khí cacbonic và hơi nước. Câu 5: Khi đốt cháy khí metan bằng khí oxi thì tỉ lệ thể tích của khí metan và khí oxi nào dưới đây để được hỗn hợp nổ? A. 1 thể tích khí metan và 3 thể tích khí oxi.

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