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TLS Online TPP Program

#Question id: 29554

One important difference between the anatomy of roots and the anatomy of leaves is that__

#XL - R Botany
  1. only leaves have phloem and only roots have xylem.
  2. the cells of roots have cell walls and leaf cells do not.
  3. a waxy cuticle covers leaves but is absent in roots.
  4. vascular tissue is found in roots but is absent from leaves.
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TLS Online TPP Program

#Question id: 20176

#XL - P Chemistry

An electron has kinetic energy of 2·14 × 10–22J.Its de-Broglie wavelength will be nearly (me = 9.1 × 10–31 kg)
TLS Online TPP Program

#Question id: 20177

#XL - P Chemistry

What will be de-Broglie wavelength of an electron moving with a velocity of 1·20 × 105ms–1 ?
TLS Online TPP Program

#Question id: 20178

#XL - P Chemistry

The de-Broglie wavelength associated with ball of mass 200 g and moving at a speed of 5 m hour–1 is of the order of (h = 6·625 x 10–34 Js)
TLS Online TPP Program

#Question id: 20179

#XL - P Chemistry

The third line of the Balmer series. in the emission spectrum of the hydrogen atom, is due to the transition from the
TLS Online TPP Program

#Question id: 20180

#XL - P Chemistry

The highest number of unpaired electrons are w present in
TLS Online TPP Program

#Question id: 20181

#XL - P Chemistry

Rutherford’s atomic model suggests the existence