Which of the following mineral is hardest in nature?

Question 2

Which of the following minerals are found in Layers of Sedimentary Rocks?

Question 3

Self-linking ability of carbon is called

Question 4

What is the respiratory pigment in humans?

Question 5

Consider the following questions:

1) Diaphragm moves down and our lungs are contracted when we breathe in air.

2) Diaphragm relaxes and it return to its dome like shape when we breathe out air.

Which of the above statements are correct?

Question 6

In the given circle AB is the chord of length 40 cm and O is the centre of the circle. Radius of the circle is 25 cm, then what is the length (in cm) of OE?

Question 7

If the side of a cube is 5 cm, then what is the volume (in cm^{3}) of cube?

Question 8

What is the HCF of 1/3 and 2/5?

Question 9

If , find the value ofθ

Question 10

If sin θ + cos θ = sin (90^{0}- θ) then tan is-

Question 11

While searching for a painter, Aman met three locals – Ankit, Bhanu and Chandu – who always gave two replies to any question. Among them one is a truth teller, one is a liar, and one is an alternator. When Aman asked them, “Who among you is the painter?”, their replies were:

Ankit. I am the painter.

Bhanu is a liar.

Bhanu. I am the painter.

Chandu is a liar.

Chandu. Bhanu is the painter.

Ankit is a liar.

Question 12

Each one out of P, Q and R had exactly one different title amongst the Fast, the Slow and the Beautiful. Also, each person always gave two replies to any question. Exactly one among them always spoke the truth, another always lied, and the last person always alternates between truth and lie (in any order). When asked about their titles, the following were their replies:

P: Q is ‘the Fast’.

I am ‘the Beautiful’.

Q: R is ‘the Slow’.

P is not ‘the Fast’.

R: Q is ‘the Beautiful’.

P is not ‘the Slow’.

Which among the following choices has the names of the persons who had the title the fast, the slow and the beautiful respectively?

Question 13

Which gas is present in maximum amount in air?

Question 14

Which layer of the atmosphere provides most ideal conditions for flying aeroplanes?

Question 15

What happens in condensation process in water cycle?