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- Question
Compressions and Rarefactions are characteristic of
Options- A. Longitudinal waves
- B. Transverse waves
- C. Both A & B
- D. Neither of A & B
- Correct Answer
- Longitudinal waves
ExplanationCompressions and Rarefactions are characteristic of Longitudinal waves.
The direction of vibration of the particles is in the same plane as in which the wave is propagating. The particles vibrate back and forth, about their mean positions.
- 1. What is the middle name of Ashish Nehra?
Options- A. Diwansingh
- B. Karansingh
- C. Ramsingh
- D. Kulwaniram Discuss
- 2. Radical vascular bundles are those in which
Options- A. xylem is surrounded by phloem
- B. phloem is surrounded by xylem
- C. xylem and phloem occur on the same radius
- D. xylem and phloem occur on the different radii Discuss
- 3. The molecule which has the highest percentage of ionic character among the following is
Options- A. HI
- B. HF
- C. HCI
- D. HBr Discuss
- 4. What was Sachin Tendulkar's average when he made his first thousand runs in ODIs?
Options- A. 35.83
- B. 22.92
- C. 43.87
- D. 42.86 Discuss
- 5. The member of a State Public Service Commission can be removed on the ground of misbehavior only after an enquiry has been conducted by the
Options- A. Supreme Court of India
- B. High Court of the state
- C. committee appointed by the president
- D. None of the above Discuss
- 6. If an economy is equilibrium at the point where plans to save and to invest are equal, then government expenditure must be
Options- A. zero
- B. equal to government income
- C. larger than government income
- D. negative Discuss
- 7. The age of most ancient geological formations is estimated by
Options- A. Ra - Si method
- B. Potassium - argon method
- C. C14 method
- D. Uranium - lead method Discuss
- 8. When did Sourav Ganguly made his ODI debut?
Options- A. 20 March 1993
- B. 11 January 1992
- C. 1 December 1987
- D. 1 June 1998 Discuss
- 9. Gabriel Daniel Fahrenheit was
Options- A. a German Physicist
- B. developed the mercury thermometer in 1714
- C. devised temperature scale
- D. All of the above Discuss
- 10. Excessive secretion from the pituitary gland in the children results in
Options- A. increased height
- B. retarded growth
- C. weakening of bones
- D. None of the above Discuss
More questions
Correct Answer: Diwansingh
Explanation:
Correct Answer: xylem and phloem occur on the different radii
Explanation:
In angiosperms the vascular bundles are mainly of three types (i) radial (ii) conjoint (iii) concentric.
(i) Radial : Presence of radial vascular bundles is the characteristic feature of roots. Those vascular bundles in which xylem and phloem are present on different radii are known as radial vascular bundles. In between xylem and phloem bundles parenchymatous cells are present.
(ii) Conjoint : In these vascular bundles xylem and phloem are present on the same radii. Conjoint vascular bundles may be collateral (phloem is present only outer to xylem) or bicollateral (phloem is present on both sides of xylem). If cambium is present between xylem and phloem then the vascular bundle is known as open, otherwise it is called closed.
(iii) Concentric : Those vascular bundles in which one type of vascular tissue is surrounded by another type are known as concentric vascular bundles. These bundles may be amphivasal or leptocentric(phloem is completely surrounded by xylem) or amphicribal or hardocentric (xylem is completely surrounded by phloem). Amphivasal bundles are found in Dracaena and Yucca. Amphicribal bundles are found in stamens of many dicots etc.
Correct Answer: HF
Correct Answer: 35.83
Explanation:
Correct Answer: Supreme Court of India
Correct Answer: equal to government income
Correct Answer: Uranium - lead method
Correct Answer: 11 January 1992
Explanation:
Correct Answer: All of the above
Correct Answer: increased height
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