Only math tables

The following table represent the elements and the atomic number: With reference to this, answer the following using only the alphabets given in the table. Which element has an electron affinity zero ?

Show with the help of a diagram, how you will obtain an AND gate using only NAND gates, (Truth table is not required)

The following table represent the elements and the atomic number: With reference to this, answer the following using only the alphabets given in the table. Name the element, which forms an ionic compound with chlorine.

The following table represent the elements and the atomic number: With reference to this, answer the following using only the alphabets given in the table. Which element combines with hydrogen to form a basic gas ?

Assertion: The familiar equation mg=R for a body on a table is true only if the body is in equilibrium. reason: The equality of mg and R has no connection with the third law.

A group of tenth-grade students responded to a survey that asked which math course they were currently enrolled in. The survey data were broken down as shown in the table above. Which of the following categories accounts for approximately 19 percent of all the survey respondents?

A bulb is hanging over a table. At which portion of the table is the illuminance maximum '? If a plane mirror is placed above the bulb facing the table, will the illuminance on the table increase ?

A book is lying on the table. What is the angle belween the action of the book on the table and the reaction of the table on the book?