Explanation

IgM antibodies are produced in response to polysaccharide antigens, like pneumococcal bacteria, without prior exposure or immune activation.

Pneumococcal capsular polysaccharide is a T-independent antigen, stimulating an IgM-dominated response without T cell involvement.

Explanation

In the Expanded Program on Immunization (EPI), MMR vaccine is used to protect against measles, mumps, and rubella (German measles).

MMR vaccine is typically administered in two doses.

At 9-12 months and 16-24 months of age, to provide protection against these three diseases.

Explanation

Herpes zoster vaccine is also known as Shingrix.

It is commonly given to prevent shingles, a viral infection that causes a painful rash.

It is caused by the reactivation of the varicella-zoster virus.

Explanation

WHO coordinates global vaccination efforts and campaigns.

WHO's immunization program aims to protect people of all ages against vaccine-preventable diseases.

It has been instrumental in global efforts to eradicate smallpox and polio.

Explanation

To find the number of shelves needed, divide the total number of books (24375) by the number of books that can be arranged in each shelf (375):

24375 ÷ 375 = 65

So, 65 shelves will be needed.

Explanation

To solve the problem, follow these steps:

1: Determine B's efficiency compared to A:

• A can finish the work in 40 days, so A's work rate is  1/40 of the work per day.
  
• If B is 255% less efficient than A, it means B's efficiency is reduced by 255%, which implies B is not practically effective (usually considered inefficient or not working effectively in real terms).

2: Calculate B's efficiency:

• If B is 255% less efficient, B's effective efficiency would be negative, which isn't practically feasible. To make sense of this:
• Assume B’s efficiency is effectively lower compared to A in realistic scenarios.

3: Adjust B's effective efficiency for practical calculations:

• Let's use a model where B is significantly less efficient but not zero. For instance, if B’s efficiency is assumed to be around 10% of A’s for simplicity:
• B can do the work in approximately 400 days.

The closest feasible answer given practical scenarios and combined work rate calculations is None.

Explanation

Let's calculate the number of skilled employees (x) and unskilled employees (y):

Total salary of skilled employees = 520x

Total salary of unskilled employees = 420y

Total salary of all employees = 500(x + y)

Since the average salary is Rs. 500, we can set up the equation:

520x + 420y = 500(x + y)

Solving for x and y, we get:

x = 0.6(x + y)

So, the percentage of skilled employees is:

(0.6(x + y) / (x + y)) × 100 = 60%

Therefore, 60% of the employees in the firm are skilled.

Explanation

Five experienced electricians Fahad, Hashim, Jamal, Kaleem and Masoor and four inexperienced electricians Rehman, Salman, Tahir and Waqar must decide which of them will be assigned to four work teams of exactly two electrician each. Assignments must meet the following restrictions:

• Each electrician is assigned to at most one team.
• At least one electrician on each team must be experienced.
• Neither Masoor nor Rehman nor Waqar can be assigned to a team with Fahad.
• If Tahir is assigned to a team, either Hashim or Kaleem must be assigned to that team.
• Jamal cannot be assigned to a team with Rehman.

Which one of the following is an who can be inexperienced electrician assigned to a team with Fahad?

A. Kaleem

B. Salman

C. Rehman

D. Tahir

Explanation

The series is divided by 2 to get the next term, so:

240 ÷ 2 = 120

120 ÷ 2 = 40

40 ÷ 2 = 10

10 ÷ 2 = 2

And preceding the 240, we have:

440 ÷ 2 = 220

So, the correct sequence is: 220, 240, 120, 40, 10, 2.

Explanation

•  Kalma e Touheed is recited during Hajj on the way to Mina.

  لَآ اِلٰهَ اِلَّا اللهُ وَحْدَهٗ لَا شَرِيْكَ لَهٗ لَهُ الْمُلْكُ وَ لَهُ الْحَمْدُ يُحْىٖ وَ يُمِيْتُ وَ هُوَحَیٌّ لَّا يَمُوْتُ اَبَدًا اَبَدًاؕ ذُو الْجَلَالِ وَالْاِكْرَامِؕ بِيَدِهِ الْخَيْرُؕ وَهُوَ عَلٰى كُلِّ شیْ ٍٔ قَدِیْرٌؕ