1. Which ray is used to detect cracks in metallic instruments?
A. X-rayB. Gamma rayC. UV rayD. Microwave
2. Which one differentiates between aldehyde and ketone?
A. Fehling reagentB. Collins reagentC. Grignard reagentD. Lucas reagent 1∘, 2∘ 3∘
3. Which of the following does not spread through blood?
A. HBVB. HAVC. HCVD. HDV
4. Antonym of 'Meticulous' is-
A. CarelessB. ParticularC. CalculatedD. Planned
5. Which mammal has the highest fat content in its milk?
A. HumanB. BuffaloC. SheepD. Goat
6. In which two steps Carnot cycle, does the change in entropy be zero?
A. 1st and 2nd stepB. 1st and 3rd stepC. 2nd and 4th stepD. 3rd and 4th step