Solution:

TIF56

Explanation:
The password is formed as:
T (5th letter of Shruti)
I (5th letter of Arshika)
F(1st letter of Friday)
5(5th day of week)
6(Length of Friday)

Similarly, we will pick the 1st letter for Monday and 3rd letter for Wednesday.

Solution:

Treasure Map Is Hidden Inside The Hanging Room Floor.

Explanation.
Just reverse the text "roolF mooR gnignaH ehT edisnI neddiH sI paM erusaerT".

Solution:

Egypt

Explanation:
: I Start where the time ends - TIME ends with 'E'
: My second is an expression of surprise - G (geee)
: My third is a question - Y(why)
: My fourth is urinate - P (Pee)
: I end with a drink - T (Tea)

Solution:

The conversation taking place in DST when there is a gap of approx 1hour in one of the city.

Explanation:
Daylight Saving Time (DST) is the practice of setting the clocks forward 1 hour from the standard time during the summer months, and back again in the fall, in order to make better use of natural daylight.
Therefore in case of DST, one city has time 1:30 and another city also can have time 1:30 as in one of them DST has applied and in other it's not.

Solution:

Below Six Animal are marked in the picture below.

1. Rabbit
2. Alligator.
3. Camel.
4. Butterfly.
5.Cobra.
6. Deer.

Solution:

21982030

Explanation:
Next number formed is (number * (number-2)) - number;
i.e
(5 * 3) - 5 => 10
(10 * 8) - 10 => 70
(70 * 68) - 70 => 4690
(4690 * 4688) - 4690 => 21982030

Solution:

707

Explanation:
Square of 707 = 70499849
4+9+9+8+4+9 = 43

Solution:

4 Pounds

Explanation
90% of water = 18 pounds
10% of carbon = 2 pounds

Now,
Earlier 10% of carbon is now contributing 50% weight = 2pounds
Therefore weight of water is also contributing 50% weight = 2pounds

Sum = 4 pounds

Solution:

CAT

Explanation:
1. LOCATE
2. EDUCATE
3. CATER
4. CATTLE

Solution:

abracadabra