Complete the following table.
| u (m/s) | a (m/s2) | t (sec) | v = u + at (m/s) |
| 2 | 4 | 3 | - |
| - | 5 | 2 | 20 |
| u (m/s) | a (m/s2) | t (sec) | s = ut + 1/2at2 (m) |
| 5 | 12 | 3 | - |
| 7 | - | 4 | 92 |
| u (m/s) | a(m/s2) | s (m) | v2 = u2 + 2 as (m/s)2 |
| 4 | 3 | - | 8 |
| - | 5 | 8.4 | 10 |
Concept: Motion and Rest
Give scientific reason.
Even though the magnitudes of action force and reaction force are equal and their directions are opposite, their effects do not get cancelled.
Concept: Motion and Rest
Write answer to the following question and explain your answer.
Explain how the element sodium is monovalent.
Concept: Laws of Chemical Combination
Identify the odd one out and justify.
Chloride, nitrate, hydride, ammonium
Concept: Salts
Identify the odd one out and justify.
Hydrogen chloride, sodium hydroxide, calcium oxide, ammonia
Concept: Salts
Identify the odd one out and justify.
Acetic acid, carbonic acid, hydrochloric acid, nitric acid
Concept: Salts
Identify the odd one out and justify.
Ammonium chloride, sodium chloride, potassium nitrate, sodium sulphate
Concept: Salts
Identify the odd one out and justify.
Sodium nitrate, sodium carbonate, sodium sulphate, sodium chloride
Concept: Salts
Identify the odd one out and justify.
Calcium oxide, magnesium oxide, zinc oxide, sodium oxide.
Concept: Salts
Identify the odd one out and justify.
Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate.
Concept: Salts
Identify the odd one out and justify.
Sodium chloride, potassium hydroxide, acetic acid, sodium acetate.
Concept: Salts
State the difference.
Cation and anion
Concept: Salts
Explain by drawing a figure of the electronic configuration.
Formation of sodium chloride from sodium and chlorine.
Concept: Salts
Explain by drawing a figure of the electronic configuration.
Formation of a magnesium chloride from magnesium and chlorine.
Concept: Salts
Write down the changes that will be seen in the instance and explain the reason behind it.
A litmus paper was dropped into 2ml dilute HCl. Then 2ml concentrated NaOH was added to it and stirred.
Concept: Salts
Write down the changes that will be seen in the instance and explain the reason behind it.
Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH.
Concept: Electrovalent (or Ionic) Bond
Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large.
Sodium chloride
Concept: Salts
Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large.
Magnesium chloride
Concept: Salts
Distinguish between Weather and climate.
Concept: Weather
Explain with suitable examples, the care to be taken when using the methods of transporting patients.
Concept: Weather
