Presidents of India List

Presidents OF India 

Prime ministers of India list

List OF Prime Ministers  Of India 

OXYGEN

ऑक्सीजन

• ऑक्सीजन हमारे लिए किस प्रकार उपयोगी है ? हमारी धरती के वायुमंडल में यदि ऑक्सीजन न होती तो कोई भी प्राणी जीवित नहीं रह पाता । ऑक्सीजन की अनुपस्थिति में कोई वस्तु जल भी नहीं सकती । आदमी तो क्या पेड़ - पौधे और जल में रहने वाले

WHAT IS RED CROSS

 रेडक्रास क्या है

• रेडक्रास क्या है और । इसका जन्म कैसे हुआ ?  रेडक्रास एक अंतरराष्ट्रीय मानवीय संस्था है । प्रारंभ में इसका क्षेत्र केवल युद्ध में घायल सैनिकों की देखभाल करना था , किंतु अब यह सभी प्रकार के मानवीय उत्पीड़न की रोकथाम और पीड़ितों को सहायता पहुंचाने के

What is Hypnosis

 What is Hypnosis 

• What is Hypnosis? Hypnosis is a science by which the mental state of a person is changed in such a way that it works according to the suggestions of the hypnotist.

• Hypnosis is an ancient Indian system. Hypnosis has been used by Indians since ancient times. Earlier

Importance of dust

 Importance of dust 

• Is dust also useful. People's perception about dust is that it is useless. It doesn't work any of us, but it's not really. Dust is also very useful for us. Before talking about the use of dust, it is important to know what the dust is and how it is produced.

Archimedes principle

    Why objects float in liquid

•  Why does ice float in water? You may have noticed that when a piece of ice is poured into the water, it does not sink, but floats. The piece of ice looks solid and heavy , so why not drown it in the water ? Even large mountains of ice float in the sea. Do you know why ice floats in water?