Magnetic Effects of Electric Current — Science STD 10 — Question

What is an oxidising agent? Name two oxidising agents which can oxidise ethanol to ethanoic acid.

You have been provided with three test-tubes. One of these test-tubes contains distilled water and the other two contain an acidic and a basic solution respectively. If you are given only blue litmus paper, how will you identify the contents of each test-tube?

Write the sex of the baby that inherits Y-chromosome from the father.

Define "Nutrition" Why is nutrition necessary for an organism?

Draw the electron-dot structure of a hydrogen chloride molecule:

1. Which inert gas does the H atom in HCl resemble in electron arrangement?
2. Which inert gas does the Cl atom in HCl resemble in electron arrangement?

How do the properties of eka - aluminium element predicted by Mendeleev compare with the actual properties of gallium element? Explain your answer.

List two main causes of a person developing near sightedness. Show with the help of a ray diagram how this defect can be corrected.

While studying the dependence of potential difference (V) across a resistor on the current (I) passing through it, in order to determine the resistance of the resistor, a student took 5 readings for different values of current and plotted a graph between V and I. He got a straight line graph passing through the origin. What does the straight line signify? Write the method of determining the resistance of the resister using this graph.

What is the fundamental difference in the electronic configurations between the group 1 and group 2 elements?

Why is the conversion of ethanol to ethanoic acid an oxidation reaction?