Explanation

He was promoted to DSP

Correct: "He was promoted DSP"  

"Promote" does not take "as" when used in passive voice.

Incorrect: "He was promoted as DSP" 

Incorrect: "He was promote DSP" (wrong verb form) 

Incorrect: "He promoted as DSP" (wrong structure) 

Explanation

The sentence "Our task had been completed before sunset" is converted to active voice,

You simply need to switch the subject and object, making "We" the subject and "our task" the object, resulting in "We had completed our task before sunset.". 

Passive voice structure: "Object + had been + verb (past participle) + by subject". 

Active voice structure: "Subject + had + verb (past participle) + object". 

Explanation

This is an odd series 

 3 3 5 5 7 7 9 9 11 11 13 13....

Explanation

Explanation

Length = 6m

Width = 5m

Height = 5m

Volume = L*W*H

=6*5*4

=120

Explanation

An operating system is system software that manages computer hardware, software resources, and provides common services for computer programs.

Explanation

Spinach is vegetable all other are fruits

Explanation

Elephant is different from three

Explanation

 Diameter – Because barometer, thermometer, and lactometer are all measuring instruments, whereas diameter is a geometric term.

Explanation

9.5 x 4 =38