Explore topic-wise MCQs in Mechanical Engineering.

This section includes 162 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.

151.

Which of the following combination of processing and preservation techniques works best for smoked products?

A. salt and acidification
B. heat and solid content
C. heat, salt, acidification/minimal moisture content
D. heat, salt, dipping in brine/ minimal moisture content
Answer» E.
152.

In Pulsed Electric field, since no heat is used, the aroma and flavour of food are retained.

A. true
B. false
Answer» B. false
153.

Which of the following holds true for Pulsed Electric field?

A. it has been successful in pasteurizing milk, yogurt, soup etc
B. if there are no air bubbles present or the if food has low electrical conductivity, pef is non-applicable
C. it’s a continuous process. it cannot be applied for non-pump able solid food products
D. all of the mentioned
Answer» E.
154.

Which of the following methods refers to deactivation of microbes in food using electricity?

A. power ultrasound
B. pulsed electric field
C. hurdle technology
D. all of the mentioned
Answer» C. hurdle technology
155.

Which of the following is true about Sound Ultrasound?

A. generates mechanical energy to enhance chemical action on surfaces
B. scrubbing action loosens the dirt particles and cleans the food particle
C. generates mechanical energy to enhance chemical action on surfaces & scrubbing action loosens the dirt particles and cleans the food particle
D. none of the mentioned
Answer» D. none of the mentioned
156.

Statement 1: Nuts can be classified as high- fat, high-protein and high-carbohydrate. Statement 2: Cashew nuts come under the high-carbohydrate category.

A. true, false
B. true, true
C. false, false
D. false, true
Answer» B. true, true
157.

1 INTRODUCTION TO FOOD PRESERVATION

A. true
B. false
Answer» B. false
158.

Which of the following statement with respect to food preservation is true?

A. leafy vegetables perish fast due to their high moisture content
B. cereals have the highest requirements of moisture and soil types
C. cereal can be grown with less labour and yield of food is high
D. all of the mentioned
Answer» E.
159.

Cereals are a major source of carbohydrates.

A. true
B. false
Answer» B. false
160.

Which of the following sentence is true with respect to food storage/preservation?

A. each food type has a potential storage life
B. the mechanical abuse that food has received during storage/distribution does not affects its storage stability
C. all of the mentioned
D. none of the mentioned
Answer» B. the mechanical abuse that food has received during storage/distribution does not affects its storage stability
161.

Which of the following is a factor that affects the storage stability of food?

A. type of raw material used
B. quality of raw material used
C. method/effectiveness of packaging
D. all of the mentioned
Answer» E.
162.

Choose the true statement.

A. food storage and preservation is observed to be better/easier in parts of the world that have civilizations prevalent there
B. proteins are held in an emulsion state in a water system
C. fats are in colloidal state
D. all of the mentioned
Answer» B. proteins are held in an emulsion state in a water system