What is the purpose of the else clause in a try block?

Which of the following statements are TRUE about an SQL query? P: An SQL query can contain a HAVING clause even if it does not have a GROUP BY clause Q: An SQL query can contain a HAVING clause only if it has a GROUP BY clause R: All attributes used in the GROUP BY clause must appear in the SELECT clause S: Not all attributes used in the GROUP BY clause need to appear in the SELECT clause

A

P and R

B

P and S

C

Q and R

D

Q and S

Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below
S-Block and P-Block Elements mcq question image

S-Block and P-Block Elements mcq question image

Its simplest repeating unit is

A

^4-

B

^2-

C

^6-

D

^6-

In which of the following block would you find the Rare Earth Elements? s-block p-block d-block f-block

A

Both a and b

B

Both b and c

C

Both c and d

D

Both a and d

A spring mass system is on a horizontal plane. Spring constant is 2N/m & mass of block is 2kg. The spring is compressed by 10cm and released. A small ball is released from a height of 2m above the block on the horizontal plane. At what time should the ball be left if the block is released from the extreme position at t=0, given that the ball has to fall on the block when the speed of block is maximum?

A

1.57s

B

0.94s

C

0s

D

0.63s

A spring block system is on a horizontal surface. The block is compressed by 10cm. What should be the coefficient of friction between the block and ground such that the block comes to a stop at the mean position? Mass of block = 0.5kg & spring constant = 3N/m.

A

0.03

B

0.06

C

0.12

D

0.05

The height of a tree is defined as the number of edges on the longest path in the tree. The function shown in the pseudocode below is invoked as height(root) to compute the height of a binary tree rooted at the tree pointer root. int height (treeptr n) { if (n == NULL) return -1; if (n → left == NULL) if (n → right == NULL) return 0; else return ; \(\boxed{B1}\); // Box 1 else { h1 = height (n → left); if (n → right == NULL) return (1+h1); else { h2 = height (n → right); return ; \(\boxed{B2}\) // Box 2 } } } The appropriate expressions for the two boxes B1 and B2 are

A

B1: (1+height(n → right))

B2: (1+max(h1, h2))

B

B1: (height(n → right))

B2: (1+max(h1,h2))

C

B1: height(n → right)

B2: max(h1, h2)

D

B1: (1+ height(n → right))

B2: max(h1, h2)

When will the else part of try-except-else be executed?

A

always

B

when an exception occurs

C

when no exception occurs

D

when an exception occurs in to except block

What is the purpose of the except clause in a try block?

A

To define the block of code that will be executed if an exception is raised

B

To handle the exception

C

To raise an exception

D

To create a function

What is the purpose of the finally clause in a try block?

A

To define the block of code that will always be executed, whether an exception is raised or not

B

To handle the exception

C

To raise an exception

D

To create a function

What is the purpose of the except clause without specifying an exception type in a try block?

A

To catch any exception that occurs within the try block

B

To catch only specific exceptions

C

To handle syntax errors

D

To define a block

What is the purpose of the else clause in a try block?

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