Question

जोड्या लावा


1) हवा a) क्लोरेल्ला b) विकिरण प्रयोग 2) धार नसलेली सुरी 3) प्रोटॉन c) कमी दाब 4) रूदरफोर्ड d) मिश्रण 5) शेवाळ e) धनप्रभार​

Answer 1

Answer:

Why grills of doors and windows are always painted before they are used?

Explanation:

Chlorine has two isotopes,viz, C1-35 and C1-37. Their atomic masses are 35 and 37

respectively. Their chemical properties are same. Where should these be placed in

Mendeleev’s periodic table? In different places or in the same place? Why ?