QED42 Drupal Interview Questions

1. What is #states in form?
2. What is features module? When do we revert and update a features module?
3. How to show longitude and latitude in text fields separated by comma in google map in a node?
4. Architecture of Drupalize.me?
5. Alter a user login form to include an email field and validate in same?
6. What is the order of preprocess functions in template.php?
7. How to bring change in result of a 42 views shown as a slideshow?
8. How do we theme a view?
9. Share fields between content types?
10. How to remove ?q=user while setting up Drupal?
11. For companies they've jobs. For applications has applicants. Get all jobs of a company and for all company, get all the applications for a particular job?

TCS Drupal Interview Questions

1. How to add a new field to user account? How to validate the same?
2. Which database engine used by Drupal?
3. What is the difference between InnoDB and MyISAM?
4. Difference between UNIQUE and PRIMARY key? 
5. Explain the following contributed modules
   Features
   Views
6. How to add JavaScript and CSS to Drupal?
7. How to create a branch in Git?
8. How to use ORDER BY and GROUP BY in database?
9. What are the contributed modules used?
10. Explain Web Service, CURL?
11. What is hook_menu(), page arguments, page callback etc?
12. Experience in Drupal?
13. How to get id in JavaScript? Write a JavaScript function to get the id of the button?
14. What is taxonomies and Vocabulary in Drupal?
15. How to give connection to a field as taxonomy?
16. What are exposed filter in Views?
17. What are contextual filters?
18. How to theme a form in Drupal?
19. Use of template.php?
20. How to create a tpl for a particular content type in Drupal?

I had a telephonic interview from TCS Mumbai. Hope this helps.. :)