Question
Consider the following statements regarding
antibiotics 1. They are used to destroy disease-causing bacteria. 2. They can be applied to the skin, swallowed or injected to fight micro-organisms inside the body. 3. They are effective against disease-causing viruses. 4. The first antibiotic to be discovered was Tetracycline. Which of the statement(s) given above is/are correct?Solution
Antibiotics are very effective medicines that treat bacterial infections. They are ineffective against viral infection as viruses have different genetic makeup as compared to bacteria.
If the perimeter of a square is 40 cm, what is the length of each side?
In the given figure, O is centre of the circle. Circle has 3 tangents. If ∠ QPR = 45 0 , then what is the value (in degrees) of ∠ QOR ?
Orthocenter of an right angle triangle lies on
The measure of an angle is one-third of its supplementary angle. Find its measure.
In the given figure. ‘O' is the centre of the circle and ∠BCA = 50°. The value of ∠BDA is:
The radius of the incircle of a triangle is 3 cm. if the area of the triangle is 12 cm 2 , then its perimeter is?
The length of the each side of an equilateral triangle is 7√3 cm . The area of circumcircle, (cm 2 ) is
- ABCD is cyclic quadrilateral in which A = 72º and B = 105º What is the difference between the measures of C and D?
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 6cm, BC = 9cm then what is BD:CD?
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