Give reason -: The diurnal range of temperature during summer in Bikaner is great.
Answers
1.Lack of forest region,no moisture is created and hence receives no rain fall and as a result the temperature remains dry.
2.The lack highly altitued mountains.Because of no high peaks the don't stop or become a hurdle for the rain bearing winds and hence the clouds easily moved by winds and again lack of rain and hence the area remains dry.
3.Due to topographical features also ,it's located towards the Arabian sea branch and hence up till the winds or clouds flow towards this place becomes Less moist and hence becomes lighter and evaporates easily leaving the area totally dry.
4.Due to the deserted are it also affect it's weather than other places and there is an extreme weather conditions as sand quickly get heated up and Cools quickly.
5.And due to also the thermal power plant the temperature varies .
So due to this much lack of rain and dryness and sand this area continentally has diurnal temperature.