Monday, December 1, 2025

Countries which don't have written constitution

 1.   Israel 

              Israel never adopted a constitution.  It has basic laws, court decisions and parliamentary statutes.



2.  United Kingdom 

              United Kingdom don't have written constitution.



3.  Saudi Arabia 

                   Saudi Arabia's governance primarily based on Quran and Sunni Islamic law.



4.   New Zealand 

                   Like UK, New Zealand don't have written constitution.



5.  San Marino

                   San Marino don't have single unified constitution. But it has parliamentary system and century old statutes.

Countries that sell petrol in cheaper prices around the world

I have listed down the countries where petrol is  available for cheaper price than India.


I have also given the price in rupees for one litre of petrol in those countries 




 1.  Iran ,   Rs 2.51  per liter


2. Libya ,   Rs   2.51 per litre


3.  Venezuela , Rs  3.03 per  litre 


4.    Angola ,  Rs  28.44 per litre


5.   Egypt ,  Rs  29.39  per litre


6.  Algeria ,  Rs  29.48  per litre 


7.  Kuwait , Rs 29.56  per  litre


8.  Turkmenistan, Rs  37.11  per  litre


9.  Malaysia , Rs  40.49  per litre


10. Kazakhstan, Rs 41.01  per  litre

Sunday, November 30, 2025

How many times can lizards regrow their tails ??

 All of us must have seen a lizard without tail.


When threatened by a predator, a lizard can shed their tail. 


This is called autotomy.


The tail detaches along specialized fractures within the vertebrae.


This is a defense mechanism that serves as a distraction, allowing the lizard to escape.


Once the tail is lost, process of regeneration begins.


Lizards ' limitations of regeneration of tail 


While lizards can regrow their tails, this is not limitless.


If the regenerated tail is lost again, it can not regrow in the same manner.


The original tail consists of bones, but regrown tail consists only of cartilage.


Though the nerve regrow, their arrangement and functionality may differ from original.


A lizard can potentially shed its tail multiple times throughout its life, but quality and functionality of each regenerated tail decrease over time.


Once the lizard has regenerated tail, subsequent detachment does not trigger another regeneration cycle with same complexity.

Bheja Fry question

 This Bheja Fry question was asked on Koun Banega Karodpati program.


Question 


In a class of 50 students, 45 students have passed the exam.  What is the failing percentage ??

1.   0%

2.  25%

3. 10%

4.  50%



Answer 


First we must read the question carefully.


Though it is saying about the number of passing students, at the end it is asking for failing percentage !!!!


We will go by step by step,


Total students  =  50

Students who have passed   =  45

Students who failed  =  Total students  -  Number of passed students 

                                              50    -      45

Students who have failed  =  5


Failing percentage  =  (  Failed students  )  /  (  Total number of students )  *  100


==>>     (   5  /  50  )  *  100

==>>       0.1   *   100

==>>       10 %


Similarly, passing percentage  = ( passed students / total students )  / 100

==>>  (   45 /  50 )  * 100

==>>    0.9 * 100

==>>    90  %

Saturday, November 29, 2025

Why don't Titan's sea have deltas??

 Titan, Saturn's largest moon has lakes and rivers just like Earth  !!!


But these are not filled with water but liquid methane and ethane.


Titan's lakes and seas are filled with liquid hydrocarbons.  These liquids have different properties affecting sediment transportation and deposition.


Titan's surface lacks significant amounts of sediments which is essential for delta formation.


Titan's surface is formed by cryovolcanism  and hydrocarbon lakes rather than water driven erosion and deposition.


These factors combined make it difficult for delta formation on Titan unlike on Earth   !!!!