In this section, each question has two matching lists. Choices for the correct combination of elements from List-I and List-II are given as options A, B, C
and D out of which one is correct.
----P---- Q---- R---- S
A 3---- 2---- 4---- 1
B 3---- 4---- 2---- 1
C 1---- 3---- 4---- 2
D 4---- 3---- 1---- 2
this answer is messed uphow does protons prevent rustingshould it not be positively charged
Moon's revolution and rotation are such that only one side of the moon always faces us. The other side is not visible at that time. We only see that portion of it which reflects sunlight to us.
When earth comes between the sun and the moon, then it is called
B first quarter
C new moon
purnima in sanskrit does not mean an eclipse but a full moon night
The distance of the star Proxima Centauri from the Earth is
A 4.3 million kilometres
B 81/4 light minutes
C 2 million light years
D 4.3 light years
the exact answer is 4.22 light years. as 4.3 light years was closest, therefore it should be the answer not 4.3 million km
You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either
A concave mirror or convex mirror.
B concave mirror or convex lens.
C concave mirror or concave lens.
D concave lens or convex lens.