Question
Seema added a few pieces of copper turnings to a test tube containing concentrated acid P
Seema added a few pieces of copper turnings to a test tube containing concentrated acid P and she noticed that a reddish-brown…
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An organic compound X contains carbon, oxygen and hydrogen only
An organic compound ‘X’ contains carbon, oxygen and hydrogen only. The percentage of carbon and hydrogen are 47.4% and 10.5% respectively. The…
Question
Given below are organic compounds labelled A to F
Given below are organic compounds labelled A to F. Answer the questions that follow: (a) Which compound forms a single product with…
Question
Given below is a diagram showing the placement of five different oxides
Given below is a diagram showing the placement of five different oxides. With respect to the given diagram answer the following questions:…
Question
Rohit took two different salt solutions in test tubes C and D
Rohit took two different salt solutions in test tubes C and D as shown in the figure below. He added dilute HCl…
Question
Give balanced equations for the following
Give balanced equations for the following: (a) Action of dilute hydrochloric acid on ammonium carbonate. (b) Oxidation of sulphur with hot concentrated…
Question
Ammonia gas is passed over heated copper (II) oxide in a combustion tube
Ammonia gas is passed over heated copper (II) oxide in a combustion tube: (a) Name the gas evolved. (b) What will be…
Question
Name the element with the highest ionisation potential
Given below are two sets of elements from two different periods. Name the element with the highest ionisation potential in each of…
Question
Study the table given below and answer the questions
Study the table given below. Use only the letters given in the table to answer the questions. Do not identify the elements.…
Question
Name the gas produced during each of the following reactions
Name the gas produced during each of the following reactions: (a) When copper is treated with hot, concentrated nitric acid. (b) When…