In diamond. four valence electrons of carbon are joined in …..shape.

Solution
tetrahedral
Find the missing group of letters in the following question:
Cx, FU,IR……OL, RI

Solution
Thus missing group = W
If in a certain code. RETAIL’is written as UFSBJM. then in the same code EXPECT will be written as

Solution
None of these
Choose the odd one out.

Solution
Graphite. Diamond and coal are allotropes of carbon but Emerald is not.
In the following question. if the order continues. the next figure will be

Solution
From question So,
A man bought a radio for Rs. 800 and spent Rs. 400 on it. He sold it for Rs. 1500. His gain per cent is

Solution
Actual C.P. of radio
= 800 + 400 = Rs. 1200
SP = Rs. 1500
∴ Gain% = \(\frac{300}{1200}\)× 100 = 25%
The smallest fivedigit number which is exactly divisible by 4:76 is

Solution
The smallest 5digit number=10000
On dividing 10000 by 476, remainder = 4
∴ Required number
= 10000+ (476  4)
= 10472

Solution
\(\left ( 3+2\sqrt{2} \right )^{3}+\left ( 32\sqrt{2} \right )^{3}\)
\(=\frac{1}{\left ( 3+2\sqrt{2} \right )^{3}}+\frac{1}{\left ( 32\sqrt{2} \right )^{3}}\)
\(=\frac{\left ( 32\sqrt{2} \right )^{3}+\left ( 3+2\sqrt{2} \right )^{3}}{\left ( 3+2\sqrt{2} \right )^{3}\left ( 32\sqrt{2} \right )^{3}}\)
\(=\frac{2\left [ (3)^{3}+3.3\left ( 2\sqrt{2} \right )^{2} \right ]}{(98)^{3}}\)
[∵ (a + b)^{3} + (a b)^{3} = 2 (a^{3}+ 3ab^{3})]
= 2 (27 + 72) = 198
Four identical kettles with the same amount of water have bases made of different metals of the same thickness. If these kettles are placed on identical flames in an identical manner. water will boil first in the kettle the base of which Is made of

Solution
But of the given options, Copper is the best conductor of heat so water in kettle with copper base will boil first.
When we hear a sound. we can identify its source from

Solution
But of the given options, Copper is the best conductor of heat so water in kettle with copper base will boil first