The reaction of an element A with water produces combustible gas B and an aqueous solution of C. When another substance D reacts with this solution C also produces the same gas B.D also produces the same gas even on reaction with dilute `H_2 SO_4` at room temperature. Element A imparts golden yellow colour to Bunsen flame. Then A,B,C and D may be identified as

When a substance A reacts with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts with this solution of C, it also produces the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow colour a smokeless flame to Bunsen burner. A,B,C, and D respectively are :

When a substance A reacts with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts with this solution of C, it also produces the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow colour a smokeless flame to Bunsen burner. A,B,C, and D respectively are :

When a substance A reacts with water, it produces a combustible gas B and a solution of substance C in water. D reacts with this solution of C and produces the same gas B on warming. D can also produce gas B on reaction with dilute H_2SO_4 . A imparts a deep golden yellow colour to smokeless flame. A, B, C and D respectively are

When a substance a reacts with water, it produces a combustible gas B and a solution of substance C in water. When another substances D reacts with this solution of C . It also produce gas B on reaction with dilute sulphuric acid at room temperature . A imparts a deep golden yellow colour to the smokless flame of bunsen flame A,B , C and D are respectively

When a substance A reacts with water it produces a conbustible gas B and a solution of substance C in water. When another substance D reacts with this soution of C , it also produces the same gas B on warming but D can produce B on reaction with dilute sulphuric acid at room temperature. B on reaction with dilute sulphuric acid at room tempreture. A imparts a golden yellow colour to a smokeless flame of bunsen flame. A,B,C and D are respectively.