1. Modern periodic law had been given by (1) 1. Moseley 2. Mendeleev 3. Lother-Mayer 4. Lavoisier 2. Which one is known as father of periodic table (3) 1. Lavoisier 2.... Read more
1. If m and n are positive integers and (m – n) is an even number, then (m^2-n^2 ) will always be divisible by: (1) 1. 4 2. 6 3. 8 4. 12 2. Two number are such that their difference, their... Read more
1. To which one of the following types of organisms do mushrooms belong? (2) 1. Algae 2. Ferns 3. Fungi 4. Lichens 2. Which one of the following produces seeds but no flowers? ... Read more
1. White light is made up of seven colors. What is the method of separating the colors? (1) 1. By passing it through a prism 2. By filtration 3. Can’t be separated 4. Both... Read more
1. Which one of the following is an abiotic and renewable resource? (3) 1. iron ore 2. livestock 3. water 4. forests 2. The largest ecosystem of the Earth is (1)... Read more
1. Ozone hole refers to (3) 1. hole in ozone layer 2. decrease in the ozone layer in troposphere 3. decrease in thickness of ozone layer in stratosphere 4. increas... Read more