Questions

It is Blackboard or Chalkboard which is Black when clean, and as you write on it with white chalk it becomes dirty in White color.

Because 8085 processor is 8 bit ALU (arithmetic logic review). Similarly 8086 processor has 16 bit ALU.

The kidneys deactivate vitamin D and stimulate the activity of osteoclasts is wrong among the functions of kidneys.

The kidneys are two bean-shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood before sending it back to the heart.

The kidneys perform many crucial functions, including:

• maintaining overall fluid balance.
• regulating and filtering minerals from the blood.
• filtering waste materials from food, medications, and toxic substances.
• creating hormones that help produce red blood cells, promote bone health, and regulate blood pressure.