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Consider the following statements regarding tobacco mosaic viruses and choose the correct answer:<br>1. Tobacco mosaic viruses are sap transmissible<br>2. These can stand a high degree of dilution<br>3. Breaking of a hair with contaminated instrument serves as a means of transmitting the virus<br>4. These viruses are insect borne

Correct Answer: Only 1, 2 and 3 are true

Let D be a simple graph on 10 vertices such that there is a vertex of degree 1, a vertex of degree 2, a vertex of degree 3, a vertex of degree 4, a vertex of degree 5, a vertex of degree 6, a vertex of degree 7, a vertex of degree 8 and a vertex of degree 9. What can be the degree of the last vertex?

Consider the following statement
1. A bacterial food intoxication refers to food borne illnesses caused by the presence of a bacterial toxin formed in the food.
2. A bacterial food infection refers to food borne illnesses caused by the entrance of bacteria into the body through ingestion of contaminated foods and the reaction of the body to their presence or to their metabolites.
Which of the statements given above is/are correct?

In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement I: No cigars are cigarettes Statement II: All tobacco are cigars Conclusion I: Some cigarettes are tobacco Conclusion II: No tobacco are cigarettes

Consider the following statements regarding the symptoms of rugose mosaic of potato and choose the correct answer:
1. The disease occurs in a sporadic manner, hence causes less damage to the affected plants
2. It makes its appearance as small chlorotic spots
3. The leaves and branches may become rough and rugose due to the abnormal growth of hair
4. The young leaves usually remain unaffected

Which of the following botanists provided the first scientific proof that sap from a diseased plant could induce the mosaic disease in healthy tobacco plants?

Direction : Two statements I and II are given. These statement may be either independent causes or may be effects of independent causes or a common cause. One of these statements may be the effect of the other statements. Read both the statements and decide which of the following answer choice correctly depicts the relationship between these two statements. Mark answer :

I. There is considerable reduction in the number of people affected by water-borne diseases in City A during this rainy season.
II. The government has opened four new civil hospitals in City A in the beginning of the year.

The rear window of an automobile is made of thick glass i.e. AB = 5 mm and thermal conductivity is 0.8 W/m degree. To defrost this window, a thin transparent film type heating element has been fixed to its inner surface. For the conditions given below, determine the electric power that must be provided per unit area of window if a temperature 5 degree Celsius is maintained at its outer surface. Interior air temperature and the corresponding surface coefficient are 20 degree Celsius and 12 W/m2 degree. Surrounding air temperature and the corresponding surface coefficient are – 15 degree Celsius and 70 W/m2 degree. Electric heater provides uniform heat flux

Consider the following statements regarding the importance of imbibition to the plants and choose the correct answer:
1. Imbibition causes swelling of seeds and results in the breaking of testa
2. The water moves into ovules which are ripening into seeds by the process of imbibition
3. Imbibition pressure generated during germination of seeds and spores is so enormous that it can break asphalt road and concrete pavements

In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city has neither black hair nor black eyes?

In a certain city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city have neither black hair nor black eyes?