Science 2003 CBSE [ Delhi ] Set I
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Q1
Name the largest component of biogas. Marks:1View AnswerAnswer:
Methane -
Q2
Name the metal used for making the body of an aircraft.Out of syllabus Marks:1View AnswerAnswer:
Out of syllabus. -
Q3
Name the factors which affect the rate of reaction. Out of syllabus. Marks:1View AnswerAnswer:
Out of syllabus. -
View AnswerQ4
Name the two components of baking powder. Marks:1 -
Q5
If the magnification of a body of size 1 m is 2, what is the size of the image? Marks:1View AnswerAnswer:
Magnification = size of the image/size of the object
Or,Size of the image = magnification x size of the object
Or,Size of the image = 2 x 1
Or,Size of the image = 2 m -
Q6
What is glycolysis? Marks:1View AnswerAnswer:
Glycolysis: The process of breakdown of glucose into pyruvate molecules anaerobiclly is called as glycolysis. -
Q7
Define translocation. Marks:1View AnswerAnswer:
It is the process of transport of food from leaves to other parts of plants through phloem. -
Q8
What is dialysis? Marks:1View AnswerAnswer:
It is the process of filtering wastes from the blood in case of kidney failure. -
Q9
Write four characteristics used for selecting a suitable fuel. Marks:2View AnswerAnswer:
Out of syllabus. -
Q10
What is a solar cell? Name two materials mostly used for making solar cells. Marks:2View AnswerAnswer:
A semiconductor is a device that converts the energy of sunlight into electric energy is called as solar cell. Silicon and Germanium is the material mostly used for making solar cells.
