Comprehensive collection of questions from General Science asked in recent state service examinations. Each question is verified with official answer keys and step-by-step bilingual solutions.
The pH of a solution changes from 3 to 6. The $H^+$ ion concentration:
To fulfill the deficiency of which of the following elements do insectivorous plants trap and digest insects?
Which of the following is associated with biological nitrogen fixation?
A solution turns red litmus blue. The pH of the solution is:
An unknown gas dissolves readily in water. The resulting aqueous solution turns red litmus blue. This gas also produces dense white fumes with hydrogen chloride. The unknown gas is:
Match List-I with List-II and select the correct answer using the code given below the lists: List - I List - II A. Bleaching Powder 1. Sodium bicarbonate B. Baking Soda 2. Sodium carbonate C. Washing Powder 3. Calcium oxychloride D. Plaster of Paris 4. Calcium sulphate hemihydrate Code:
Which of the following is not correct?
Which of the following gases is used as a tear gas?
Limewater turns milky due to the passage of:
Which element is extremely useful in increasing the oil content in mustard?
The soil in which insectivorous plants grow is deficient in:
Which of the following is not optically active?
The most reactive among halogens is:
Which of the following elements is found in liquid state at normal temperature?
Approximately what percentage of atmospheric air is nitrogen?
Iodised salt contains:
What is blue vitriol?
Buckminsterfullerene is:
Which of the following contains carbon?
Which one of the following pairs is not correctly matched?
The unit of weight for diamond sales is carat. One carat is equal to:
Dry ice is:
Which one of the following non-metals is not a poor conductor of electricity?
Which one of the following types of coal contains a higher percentage of carbon than the others?
Which of the following is called dry ice?