CLASS-10 SCIENCE Q-12

CHAPTER-2 Acids, Bases and Salts Multiple Choice Questions QUESTION-12 SOLUTION Answer is (b) tartaric acid Explanation:A Mild edible acid along with Sodium Hydrogen Carbonate is used to prepare baking powder. Here acetic acid or citric acid can also be used in place of tartaric acid.

CLASS-10 SCIENCE Q-37

CHAPTER-1 Chemical Reactions and Equations Short Answer Questions QUESTION-37 SOLUTION Zinc is more reactive than copper as Zinc is placed above Hydrogen and Copper is placed below hydrogen in theactivity series of metals. Because of this Zinc reacts with HCl whereas Copper will not react.

CLASS-10 SCIENCE Q-25

CHAPTER-1 Chemical Reactions and Equations Short Answer Questions QUESTION-25 SOLUTION (a) Na2CO3 + HCl → NaCl + NaHCO3(b) NaHCO3 + HCl → NaCl + H2O + CO2(c) 2CuSO4+4Kl →2K2SO4+CU2I2+I2

CLASS-10 SCIENCE Q-5

CHAPTER-1 Chemical Reactions and Equations Multiple Choice Questions QUESTION-5 SOLUTION Answer is (c) (i) and (iv) Explanation:Exothermic processes will increase the temperature whereas exothermic processes will decrease the temperature.

CLASS-10 HISTORY QUESTION-275

CHAPTER-1 THE RISE OF NATIONALISM IN EUROPE Board Based Subjective Questions Very Short Questions Question : 275 Who was Johann Gottfried Herder? Solution : Johann Gottfried Herder (1744-1803) was a German philosopher, theologian, and literary critic, known for his contributions to the Sturm und Drang movement and for developing the […]

CLASS-10 HISTORY QUESTION-179

CHAPTER-1 THE RISE OF NATIONALISM IN EUROPE Board Based Subjective Questions Short Answer Questions Question : 179 Why in the years after 1848, the autocrats of central and Eastern Europe began to introduce the changes that had already taken place in Western Europe before 1815? Explain. Solution : The autocrats of […]

CLASS-10 HISTORY QUESTION-131

CHAPTER-1 THE RISE OF NATIONALISM IN EUROPE Board Based Subjective Questions Short Answer Questions Question : 131  What was the main aim of Treaty of Vienna 1815? Solution : The main aim of the Treaty of Vienna in 1815 was to establish a stable and lasting peace in Europe after […]

CLASS-10 HISTORY QUESTION-62

CHAPTER-1 THE RISE OF NATIONALISM IN EUROPE Board Based Subjective Questions Long Answer Questions Question : 62 “The first clear expression of nationalism came with the ‘French Revolution’ in 1789.” Examine the statement. Solution : The statement that “The first clear expression of nationalism came with the French Revolution in 1789” […]