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What Does Echocardiogram Primarily Use?

Echocardiogram makes use of sound waves to produce an image of the heart and the flow of blood all through... View Article

What Is Echocardiography?

It is a non-invasive technique to measure cardiac output with the help of ultrasound. For the estimation of cardiac output,... View Article

Why Must A Cell Divide?

There are several reasons for it – to divide and replace older ones, damaged or dead cells, to multiply and... View Article

Does Enzyme Speed Up Reaction?

Enzymes accelerate reactions by serving as biological catalysts. In a reaction, such catalysts reduce the activation energy as a result... View Article

How Do You Keep The Female Reproductive System Healthy?

Some ways are – maintaining a healthy lifestyle, a well-balanced diet and exercising regularly for maintenance of healthy weight. Consume... View Article

How Do You Fix Uremia?

Uremia is primarily treated through dialysis wherein wastes and extra fluids are discarded from the bloodstream and other toxic substances... View Article

Are Isolated Metabolic Reactions Living Things?

Although metabolism is a distinct attribute of living entities without exception, isolated metabolic reactions in vitro are not living, however,... View Article

Why Quantity Of Blood Returning To The Heart Determines Quantity Of Blood The Heart Gives Out?

It is since the heart pumps out whatever blood it gets back from the venous system. Hence, the quantity of... View Article

Define Pulse Pressure?

It is the variation or difference between diastolic and systolic blood pressure. Stay tuned to BYJU’S to learn similar NEET... View Article

Which Cells Undergo Meiosis?

Gametes or germ cells experience meiosis. On the other hand, somatic cells experience mitosis. Through the process of cytokinesis, cells... View Article

Social Media – New Rules & implications: RSTV – Big Picture

Rajya Sabha TV programs and discussions are very insightful and informative from a UPSC perspective. In this article, we provide... View Article

27 May 2021: UPSC Exam Comprehensive News Analysis

CNA 27 May 2021:- Download PDF Here TABLE OF CONTENTS A. GS 1 Related B. GS 2 Related POLITY AND... View Article

Operation Trident

Operation Trident was an offensive operation carried out by the Indian Navy on 4–5 December 1971 against the Pakistani port... View Article

The coefficients of x in the expansion of (1 + x) (1 + 2x) (1 + 3x)…(1 + 100x) is

1) 5050 2) 10100 3) 5151 4) 4950 5) 1100 Solution: (1) 5050 The coefficients in the expansion of (1... View Article

The two consecutive terms in the expansion of (3 + 2x)⁷⁴ whose coefficients are equal, are

1) 11, 12 2) 7, 8 3) 30, 31 4) None of the above Solution: (3) 30, 31 \(\begin{array}{l}\text \... View Article

If (1 + 2x + x²)² = ∑_k=0¹⁵ a_kx^k, then ∑_k=0⁷ a_2k =

1) 128 2) 256 3) 512 4) 1024 Solution: (3) 512 \(\begin{array}{l}\begin{array}{l} \begin{array}{l} (1+x)^{10}=\sum_{k=0}^{15} a_{k} x^{k} \\ \text { i.e,... View Article

If x^2r occurs [x + (2 / x²)]ⁿ, then n – 2r must be of the form

1) 3k – 1 2) 3k 3) 3k + 1 4) 3k + 2 Solution: (2) 3k \(\begin{array}{l}\begin{array}{l} \text {... View Article

If the coefficient of x² and x³ in the expansion of (3 + ax)⁹ is the same, then the value of a is

1) 3/7 2) 7/3 3) 7/9 4) 9/7 Solution: (4) 9/7 \(\begin{array}{l}\begin{array}{l} \text { Given the coefficients of } x^{2}... View Article

If in the expansion of (1 + x)^m (1 – x)ⁿ, the coefficients of x and x² are 3 and – 6 respectively, then m is

1) 6 2) 9 3) 12 4) 24 Solution: (3) 12 \(\begin{array}{l}(1+x)^{m}(1-x)^{n}=\left[1+m x+\frac{m(m-1)}{2} x^{2}+\ldots\right] \left[1-n x+\frac{n(n-1)}{2} x^{2}-\ldots .\right]\ =1+(m-n) x+\left[\frac{m(m-1)}{2}+\frac{n(n-1)}{2}-m... View Article

Let [x] denotes the greatest integer less than or equal of x. If x = (√3 + 1)⁵, then [x] is equal to

1) 75 2) 50 3) 76 4) 51 5) 152 Solution: (5) 152 \(\begin{array}{l}\begin{array}{l} \text { Given } x=(\sqrt{3}+1)^{5} \\... View Article

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