Statement 1: The cold point of a food item getting heated up by convection has its cold point at the centre of the container on the vertical axis. Statement 2: The cold point of a food item getting heated up by conduction has its cold point at the bottom of the container on the vertical axis.

Land masses are heated and cooled much faster than water bodies. Identify the true statements in this regard:
I. Land gets heated by conduction
II. Water has higher specific heat
III. Only the surface layers of water are heated
IV. Water gets heated by convection

A

I, II and III

B

II and III

C

I and IV

D

I, II and IV

Cost price of item A is Rs. 300 less than that of item B for a shopkeeper. He marks item A and B above 80% and 40% respectively their cost prices and sold them at 20% and 40% discount respectively. If selling price of item, A is Rs. 18 more than that of item B, then what is the ratio of cost price of item A to that of item B?

A

4 ∶ 5

B

3 ∶ 5

C

3 ∶ 4

D

2 ∶ 3

It takes 5 hours to fill a container using machine A. The same container can be filled using machine B in 10 hours. When the container is full, Machine C can fully empty the container in 20 hours. If all three machines start working on the same empty container how long will it take for the container to be completely filled,

A

12 hour

B

4 hour

C

2 hour

D

15 hour

There are five containers in a truck hold. The weight of the first container is 100 kg and the weight of the second container is 20% higher than the weight of the third container, whose weight is 25% higher than the first container’s weight. The fourth container at 175 kg is 30% lighter than the fifth container. What is the difference in the average weight of the heaviest three and the lightest three?

A

33.33 kg

B

66.66 kg

C

75 kg

D

112.5 kg

E

None of these

In the following question, 3 statements are given. You have to find which is/are necessary and sufficient to answer the following question. Two containers each contain some balls of Red and Blue color. Now all the balls of these two containers are mixed into a single third container which also contained some Red and Blue color balls initially as well. If 5 balls are taken out, then find the probability that all the balls taken out are Red in color. Statement 1∶ Total number of balls finally in 3rd container is 135. Statement 2∶ Ratio of balls in 1st container and 2nd container is 2 ∶ 7 Statement 3∶ Ratio of Red and Blue balls in 3rd container before mixing is 2 ∶ 3

A

Only statement 1 is sufficient to answer the question.

B

Only statement 1 and 2 are sufficient to answer the question.

C

Only statement 2 and 3 are sufficient to answer the question.

D

All the statements are sufficient to answer the question.

E

All the statements are not sufficient to answer the question.

A Double-ended queue supports operations such as adding and removing items from both the sides of the queue. They support four operations like addFront(adding item to top of the queue), addRear(adding item to the bottom of the queue), removeFront(removing item from the top of the queue) and removeRear(removing item from the bottom of the queue). You are given only stacks to implement this data structure. You can implement only push and pop operations. What are the total number of stacks required for this operation?(you can reuse the stack)

A

1

B

2

C

3

D

4

A double-ended queue supports operations like adding and removing items from both the sides of the queue. They support four operations like addFront(adding item to top of the queue), addRear(adding item to the bottom of the queue), removeFront(removing item from the top of the queue) and removeRear(removing item from the bottom of the queue). You are given only stacks to implement this data structure. You can implement only push and pop operations. What’s the time complexity of performing addFront and addRear? (Assume ‘m’ to be the size of the stack and ‘n’ to be the number of elements)

A

O(m) and O(n)

B

O(1) and O(n)

C

O(n) and O(1)

D

O(n) and O(m)

A tap can fill a container in 9 hours. Due to a leakage in its bottom, the container fills up in 10 hours. If the container is full, then in how much time the container will be emptied by the leakage?

A

70 hrs

B

80 hrs

C

90 hrs

D

100 hrs

Availability of drinking water is continuously decreasing. The government decided to identify those sources of drinking water which getting polluted. The following table depicts the number of polluted sources in a district. Source of drinking water getting polluted Number Wells 24 Handpump 12 Dam 12 Borewell 6 Ponds 18 The pictograph table for the above table will be (A) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (B) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (C) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (D) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds

A

B

C

D

C

In which of the following conditions distance between molecules of carbon dioxide filled in a container may increase? (i) On increasing the volume of container (ii) On leakage of some carbon dioxide gas from the container (iii) On increasing air pressure in the container (iv) On adding more carbon dioxide gas in container without changing its size

A

(ii) and (iii)

B

(iii) and (iv)

C

(i) and (iii)

D

(i) and (ii)

Statement 1: The cold point of a food item getting heated up by convection has its cold point at the centre of the container on the vertical axis. Statement 2: The cold point of a food item getting heated up by conduction has its cold point at the bottom of the container on the vertical axis.

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