science 12 grade

Question: 1. 1.25 2. 15 3. 14 4. 12 Answer: ..

Question: A force of 10 N is acting on an object of mass 10 kg. What is the acceleration produced in it? 1. 2. 3. 100 m/s 2 4. 100 m/s Answer: ..

Calculate the percentage by weight of potassium in potassium dichroma..

Question: A group of freely inter-breeding organisms constitutes a 1. species 2. genera 3. family 4. class Answer: ..

Question: The 'Scavengers' or 'Digestive bags' of a cell are ____. 1. chromosomes 2. centrosomes 3. lysosomes 4. ribosomes Answer: ..

Question: If acceleration due to gravity on earth is 10 m/s 2 then, the acceleration due to gravity on moon is ________. 1. 1.66 m/s 2 2. 16.6 m/s 2 3. 10 m/s 2 4. 0.166 m/s 2 Answer: ..

Question: Developing embryo from a superior breed is transferred into the uterus of a female with inferior characteristics by the process of 1. hybridization 2. artificial insemination 3. embryo transfer 4. random mating Answer: ..

Question: Iron rod turns red on heating. The change is a______ 1. physical change 2. temporary 3. physical and chemical change 4. chemical Change Answer: ..

Question: A solid that sublimes on heating is _________. 1. sodium chloride 2. copper sulphate 3. lead sulphate 4. ammonium chloride Answer: ..

Question: Speed of 90 km/h when expressed in m/s is . 1. 2.5 2. 25 3. 250 4. 90000 Answer: ..