diff --git a/packages/angular-query-experimental/src/__tests__/inject-is-fetching.test.ts b/packages/angular-query-experimental/src/__tests__/inject-is-fetching.test.ts
index ad29c381bb..db1f7aeea1 100644
--- a/packages/angular-query-experimental/src/__tests__/inject-is-fetching.test.ts
+++ b/packages/angular-query-experimental/src/__tests__/inject-is-fetching.test.ts
@@ -60,6 +60,36 @@ describe('injectIsFetching', () => {
     expect(rendered.getByText('fetching: 0')).toBeInTheDocument()
   })
 
+  it('should be able to filter by queryKey', async () => {
+    const key1 = queryKey()
+    const key2 = queryKey()
+
+    @Component({
+      template: `<div>fetching: {{ isFetching() }}</div>`,
+    })
+    class Page {
+      readonly query1 = injectQuery(() => ({
+        queryKey: key1,
+        queryFn: () => sleep(10).then(() => 'test1'),
+      }))
+      readonly query2 = injectQuery(() => ({
+        queryKey: key2,
+        queryFn: () => sleep(100).then(() => 'test2'),
+      }))
+      readonly isFetching = injectIsFetching({ queryKey: key1 })
+    }
+
+    const rendered = await render(Page)
+
+    await vi.advanceTimersByTimeAsync(0)
+    rendered.fixture.detectChanges()
+    expect(rendered.getByText('fetching: 1')).toBeInTheDocument()
+
+    await vi.advanceTimersByTimeAsync(11)
+    rendered.fixture.detectChanges()
+    expect(rendered.getByText('fetching: 0')).toBeInTheDocument()
+  })
+
   describe('injection context', () => {
     it('should throw NG0203 with descriptive error outside injection context', () => {
       expect(() => {
diff --git a/packages/angular-query-experimental/src/__tests__/inject-is-mutating.test.ts b/packages/angular-query-experimental/src/__tests__/inject-is-mutating.test.ts
index 91d3e89afb..66fe678d03 100644
--- a/packages/angular-query-experimental/src/__tests__/inject-is-mutating.test.ts
+++ b/packages/angular-query-experimental/src/__tests__/inject-is-mutating.test.ts
@@ -62,6 +62,39 @@ describe('injectIsMutating', () => {
     expect(rendered.getByText('mutating: 0')).toBeInTheDocument()
   })
 
+  it('should be able to filter by mutationKey', async () => {
+    const key1 = queryKey()
+    const key2 = queryKey()
+
+    @Component({
+      template: `<div>mutating: {{ isMutating() }}</div>`,
+    })
+    class Page {
+      readonly mutation1 = injectMutation(() => ({
+        mutationKey: key1,
+        mutationFn: () => sleep(10).then(() => 'data1'),
+      }))
+      readonly mutation2 = injectMutation(() => ({
+        mutationKey: key2,
+        mutationFn: () => sleep(100).then(() => 'data2'),
+      }))
+      readonly isMutating = injectIsMutating({ mutationKey: key1 })
+    }
+
+    const rendered = await render(Page)
+
+    rendered.fixture.componentInstance.mutation1.mutate()
+    rendered.fixture.componentInstance.mutation2.mutate()
+
+    await vi.advanceTimersByTimeAsync(0)
+    rendered.fixture.detectChanges()
+    expect(rendered.getByText('mutating: 1')).toBeInTheDocument()
+
+    await vi.advanceTimersByTimeAsync(11)
+    rendered.fixture.detectChanges()
+    expect(rendered.getByText('mutating: 0')).toBeInTheDocument()
+  })
+
   describe('injection context', () => {
     it('should throw NG0203 with descriptive error outside injection context', () => {
       expect(() => {
diff --git a/packages/angular-query-experimental/src/__tests__/inject-is-restoring.test.ts b/packages/angular-query-experimental/src/__tests__/inject-is-restoring.test.ts
index 0b74019b3a..73659d74a5 100644
--- a/packages/angular-query-experimental/src/__tests__/inject-is-restoring.test.ts
+++ b/packages/angular-query-experimental/src/__tests__/inject-is-restoring.test.ts
@@ -43,6 +43,26 @@ describe('injectIsRestoring', () => {
     expect(isRestoring()).toBe(true)
   })
 
+  it('should reactively reflect changes to the provided signal', () => {
+    const restoringSignal = signal(true)
+
+    TestBed.configureTestingModule({
+      providers: [provideIsRestoring(restoringSignal.asReadonly())],
+    })
+
+    const isRestoring = TestBed.runInInjectionContext(() => {
+      return injectIsRestoring()
+    })
+
+    expect(isRestoring()).toBe(true)
+
+    restoringSignal.set(false)
+    expect(isRestoring()).toBe(false)
+
+    restoringSignal.set(true)
+    expect(isRestoring()).toBe(true)
+  })
+
   it('should be usable outside injection context when passing an injector', () => {
     const isRestoring = injectIsRestoring({
       injector: TestBed.inject(Injector),
diff --git a/packages/angular-query-experimental/src/__tests__/inject-mutation.test.ts b/packages/angular-query-experimental/src/__tests__/inject-mutation.test.ts
index b9d3eea6e1..f0c53602b1 100644
--- a/packages/angular-query-experimental/src/__tests__/inject-mutation.test.ts
+++ b/packages/angular-query-experimental/src/__tests__/inject-mutation.test.ts
@@ -50,47 +50,67 @@ describe('injectMutation', () => {
   it('should change state after invoking mutate', async () => {
     const result = 'Mock data'
 
-    const mutation = TestBed.runInInjectionContext(() => {
-      return injectMutation(() => ({
+    @Component({
+      template: `
+        <div>isIdle: {{ mutation.isIdle() }}</div>
+        <div>isPending: {{ mutation.isPending() }}</div>
+        <div>isError: {{ mutation.isError() }}</div>
+        <div>isSuccess: {{ mutation.isSuccess() }}</div>
+        <div>data: {{ mutation.data() ?? 'none' }}</div>
+        <div>error: {{ mutation.error()?.message ?? 'none' }}</div>
+      `,
+    })
+    class Page {
+      readonly mutation = injectMutation(() => ({
         mutationFn: (params: string) => sleep(10).then(() => params),
       }))
-    })
+    }
 
-    TestBed.tick()
+    const rendered = await render(Page)
 
-    mutation.mutate(result)
+    rendered.fixture.componentInstance.mutation.mutate(result)
     await vi.advanceTimersByTimeAsync(0)
+    rendered.fixture.detectChanges()
 
-    expectSignals(mutation, {
-      isIdle: false,
-      isPending: true,
-      isError: false,
-      isSuccess: false,
-      data: undefined,
-      error: null,
-    })
+    expect(rendered.getByText('isIdle: false')).toBeInTheDocument()
+    expect(rendered.getByText('isPending: true')).toBeInTheDocument()
+    expect(rendered.getByText('isError: false')).toBeInTheDocument()
+    expect(rendered.getByText('isSuccess: false')).toBeInTheDocument()
+    expect(rendered.getByText('data: none')).toBeInTheDocument()
+    expect(rendered.getByText('error: none')).toBeInTheDocument()
   })
 
   it('should return error when request fails', async () => {
-    const mutation = TestBed.runInInjectionContext(() => {
-      return injectMutation(() => ({
+    @Component({
+      template: `
+        <div>isIdle: {{ mutation.isIdle() }}</div>
+        <div>isPending: {{ mutation.isPending() }}</div>
+        <div>isError: {{ mutation.isError() }}</div>
+        <div>isSuccess: {{ mutation.isSuccess() }}</div>
+        <div>data: {{ mutation.data() ?? 'none' }}</div>
+        <div>error: {{ mutation.error()?.message ?? 'none' }}</div>
+      `,
+    })
+    class Page {
+      readonly mutation = injectMutation(() => ({
         mutationFn: () =>
           sleep(10).then(() => Promise.reject(new Error('Some error'))),
       }))
-    })
+    }
 
-    mutation.mutate()
+    const rendered = await render(Page)
+
+    rendered.fixture.componentInstance.mutation.mutate()
 
     await vi.advanceTimersByTimeAsync(11)
+    rendered.fixture.detectChanges()
 
-    expectSignals(mutation, {
-      isIdle: false,
-      isPending: false,
-      isError: true,
-      isSuccess: false,
-      data: undefined,
-      error: Error('Some error'),
-    })
+    expect(rendered.getByText('isIdle: false')).toBeInTheDocument()
+    expect(rendered.getByText('isPending: false')).toBeInTheDocument()
+    expect(rendered.getByText('isError: true')).toBeInTheDocument()
+    expect(rendered.getByText('isSuccess: false')).toBeInTheDocument()
+    expect(rendered.getByText('data: none')).toBeInTheDocument()
+    expect(rendered.getByText('error: Some error')).toBeInTheDocument()
   })
 
   it('should return data when request succeeds', async () => {
@@ -498,6 +518,21 @@ describe('injectMutation', () => {
     await expect(() => mutateAsync()).rejects.toThrow(err)
   })
 
+  it('should resolve mutateAsync with the value returned from mutationFn', async () => {
+    const key = queryKey()
+    const { mutateAsync } = TestBed.runInInjectionContext(() => {
+      return injectMutation(() => ({
+        mutationKey: key,
+        mutationFn: (params: string) => sleep(10).then(() => params),
+      }))
+    })
+
+    const promise = mutateAsync('Mock data')
+    await vi.advanceTimersByTimeAsync(11)
+
+    await expect(promise).resolves.toBe('Mock data')
+  })
+
   describe('injection context', () => {
     it('should throw NG0203 with descriptive error outside injection context', () => {
       const key = queryKey()
diff --git a/packages/angular-query-experimental/src/__tests__/inject-queries.test.ts b/packages/angular-query-experimental/src/__tests__/inject-queries.test.ts
index 2d3560b99b..523bda69f0 100644
--- a/packages/angular-query-experimental/src/__tests__/inject-queries.test.ts
+++ b/packages/angular-query-experimental/src/__tests__/inject-queries.test.ts
@@ -136,6 +136,50 @@ describe('injectQueries', () => {
     expect(results.length).toBeGreaterThanOrEqual(2)
   })
 
+  it('should reflect error state when one of the queries rejects', async () => {
+    const key1 = queryKey()
+    const key2 = queryKey()
+
+    @Component({
+      template: `
+        <div>
+          status1: {{ result()[0].status() }}, error1:
+          {{ result()[0].error()?.message ?? 'none' }}
+        </div>
+        <div>
+          status2: {{ result()[1].status() }}, data2:
+          {{ result()[1].data() ?? 'none' }}
+        </div>
+      `,
+    })
+    class Page {
+      readonly result = injectQueries(() => ({
+        queries: [
+          {
+            queryKey: key1,
+            queryFn: () =>
+              sleep(10).then(() => Promise.reject(new Error('Some error'))),
+            retry: false,
+          },
+          {
+            queryKey: key2,
+            queryFn: () => sleep(10).then(() => 2),
+          },
+        ],
+      }))
+    }
+
+    const rendered = await render(Page)
+
+    await vi.advanceTimersByTimeAsync(11)
+    rendered.fixture.detectChanges()
+
+    expect(
+      rendered.getByText('status1: error, error1: Some error'),
+    ).toBeInTheDocument()
+    expect(rendered.getByText('status2: success, data2: 2')).toBeInTheDocument()
+  })
+
   describe('isRestoring', () => {
     it('should not fetch for the duration of the restoring period when isRestoring is true', async () => {
       const key1 = queryKey()
diff --git a/packages/angular-query-experimental/src/__tests__/inject-query.test.ts b/packages/angular-query-experimental/src/__tests__/inject-query.test.ts
index 82eb8f0f34..a8bff8527b 100644
--- a/packages/angular-query-experimental/src/__tests__/inject-query.test.ts
+++ b/packages/angular-query-experimental/src/__tests__/inject-query.test.ts
@@ -356,6 +356,62 @@ describe('injectQuery', () => {
     expect(rendered.getByText('failureReason: Some error')).toBeInTheDocument()
   })
 
+  it('should be able to select a part of the data with select', async () => {
+    const key = queryKey()
+
+    @Component({
+      template: `<div>data: {{ query.data() ?? 'none' }}</div>`,
+    })
+    class Page {
+      readonly query = injectQuery<{ name: string }, Error, string>(() => ({
+        queryKey: key,
+        queryFn: () => sleep(10).then(() => ({ name: 'test' })),
+        select: (data) => data.name,
+      }))
+    }
+
+    const rendered = await render(Page)
+
+    expect(rendered.getByText('data: none')).toBeInTheDocument()
+
+    await vi.advanceTimersByTimeAsync(11)
+    rendered.fixture.detectChanges()
+
+    expect(rendered.getByText('data: test')).toBeInTheDocument()
+  })
+
+  it('should show placeholderData until queryFn resolves and then expose real data', async () => {
+    const key = queryKey()
+
+    @Component({
+      template: `
+        <div>data: {{ query.data() }}</div>
+        <div>isPlaceholderData: {{ query.isPlaceholderData() }}</div>
+        <div>isSuccess: {{ query.isSuccess() }}</div>
+      `,
+    })
+    class Page {
+      readonly query = injectQuery(() => ({
+        queryKey: key,
+        queryFn: () => sleep(10).then(() => 'real-data'),
+        placeholderData: 'placeholder',
+      }))
+    }
+
+    const rendered = await render(Page)
+
+    expect(rendered.getByText('data: placeholder')).toBeInTheDocument()
+    expect(rendered.getByText('isPlaceholderData: true')).toBeInTheDocument()
+    expect(rendered.getByText('isSuccess: true')).toBeInTheDocument()
+
+    await vi.advanceTimersByTimeAsync(11)
+    rendered.fixture.detectChanges()
+
+    expect(rendered.getByText('data: real-data')).toBeInTheDocument()
+    expect(rendered.getByText('isPlaceholderData: false')).toBeInTheDocument()
+    expect(rendered.getByText('isSuccess: true')).toBeInTheDocument()
+  })
+
   it('should update query on options contained signal change', async () => {
     const key1 = queryKey()
     const key2 = queryKey()
@@ -548,24 +604,6 @@ describe('injectQuery', () => {
     })
   })
 
-  it('should set state to error when queryFn returns reject promise', async () => {
-    const key = queryKey()
-    const query = TestBed.runInInjectionContext(() => {
-      return injectQuery(() => ({
-        retry: false,
-        queryKey: key,
-        queryFn: () =>
-          sleep(10).then(() => Promise.reject(new Error('Some error'))),
-      }))
-    })
-
-    expect(query.status()).toBe('pending')
-
-    await vi.advanceTimersByTimeAsync(11)
-
-    expect(query.status()).toBe('error')
-  })
-
   it('should render with required signal inputs', async () => {
     @Component({
       selector: 'app-fake',